Database Develop

How do I root manually?

Hello everyone!
I'm a new member from today but I have read (and read and read...) the threads here and on every forum I could find, in desperate search for an answer to my questions, but so far I have found none.
Don't shop my head of now but could someone please be so kind and help me root my LG Optimus 2x by giving me a step-by-step info AND include the correct files AND then tell me what to do to have them installed?
There seem to be all too many different alternatives and I am really confused!
Here's what I've done so far -
I had Gingerbread installed and got the phone rooted with SuperOnecClick.
Upgraded then the phone to Ice Cream Sandwish 4.0.4 with LG Support Tool and lost root.
Tried to root with SuperOneClick again but constantly got stuck at # 5 or # 7 (waiting for device).​
So, how do I root and where do I find the correct firmware for this?
Android
4.0.4
Bandwithversion
1035.21_20121130
Kernel-version
2.6.39.4
Version
IMM76L.LG-P990-P99030a.1211302332
Software
P99030a
Android SDK
Superuser (not rooted)
SuperOneClick

Hi there,
Since you upgraded to official ICS, you can't use SuperOneClick to get root access again, but fear not as there are alternatives. Here you will find three different methods to root your device. In your case, I believe you need to use either the second or third option listed there.
Be aware that the third option will wipe your device, including your internal SD card, so it'd be a good idea to backup first, just in case. All three methods are harmless, but you never know.

Thank you for your reply! Now I'm on and a step closer in fixing this.
So, my phone cannot be rooted because of Official ICS?! Oh!
- that was new news to me and it could have saved me countless of hours if I had found that information out sooner. A pity I did not write here weeks ago!
I have some more questions though and I think I'm going for the 2nd option in the link you gave me.
"Put your phone into nvflash mode". Do I need a tool for that? (Here I was linking to a nvflash-setup, but as I am a new memeber I am not allowed to post outside links yet). Or do I just hold down volyme + power in order to get into that nvflash mode?
By "unzipping attached archive" I assume it means zipping it on the PC and not on the SD card?
When doing this procedure, do I have the phone in Charging or Mass storage mode?
Just a few questions I hope you (someone) have to time to give me an answer to - Thank you!

MissLight said:
So, my phone cannot be rooted because of Official ICS?! Oh!
- that was new news to me and it could have saved me countless of hours if I had found that information out sooner. A pity I did not write here weeks ago!
Click to expand...
Click to collapse
You can get it rooted, only not with SuperOneClick ^^
MissLight said:
"Put your phone into nvflash mode". Do I need a tool for that? (Here I was linking to a nvflash-setup, but as I am a new memeber I am not allowed to post outside links yet). Or do I just hold down volyme + power in order to get into that nvflash mode?
Click to expand...
Click to collapse
To enter nvflash mode turn off your device, remove the battery, then press and hold Vol- and Power at the same time and plug your phone to your PC via USB. Then follow the rest of the instructions.
MissLight said:
By "unzipping attached archive" I assume it means zipping it on the PC and not on the SD card?
Click to expand...
Click to collapse
Yep ^^ you need to extract the files from the zip to your PC.

Ok, next question :
"boot into cwm and flash SuperSU Root.zip"
How am I suppose to flash anything when the telephone is black and I'm not into it and only work from the computer?
How do I do that?
I'm stuck with a black screen only on the phone.
I heared nothing or saw nothing that sais (sound) that the phone is connected through the USB, but I have followed each step and are now stuck at above question.
Greatful for more help!

MissLight said:
Hm. I have now read more closely on the linked site. Why am I to download ICS again, I already have the same ROM?
Or do you mean I have to change the official ROM to this one in order to root properly?
Click to expand...
Click to collapse
No, there's no need to reflash ICS. The second method listed there just flashes the unlocked bootloader + root + custom CWM, and it won't touch your data & settings.
MissLight said:
I tried Volume down + Power without battery. Nothing happened, the phone was stonedead even when plugged in with USB.
Click to expand...
Click to collapse
That's OK. When in nvflash mode, you won't see anything on screen. All you'll get is the sound it makes when connected to USB.
Don't worry, you're nearly there! Keep going!
Edit: just realized I made one small mistake. To enter nvflash mode, you need to press and hold both Vol+ & Vol- at the same time (this also requires removing the battery first). Sorry about that!

Edit: just realized I made one small mistake. To enter nvflash mode, you need to press and hold both Vol+ & Vol- at the same time (this also requires removing the battery first). Sorry about that!
Oh! That explains why. My next question was published above your question and still remains.
How do I "boot into cwm and flash SuperSU Root.zip"?
Edit : This procedure does somehow not work on XP so I changed to Windows7 and have now come a bit further. The only thing remaining now is that the computer sais that it cannot find the USB device.
I have downloaded the LG modem and USB firmware but maybe I need something else? Does the firmware in a folder on C: just as NvFlash and SU-folder.

Got OK with USB firmware and all set to go now.
But, in NVFlash Recovery it sais :
Please pick bootloader, or exit (1,X)? (I pressed 1)
Attempting to flash bootloader...
Nvflash started
USB device not found
Program will now exit​
So, I'm stuck.
The phone can be found both in Mass Storage mode and I got a OK that the drivers are installed.

MissLight said:
Got OK with USB firmware and all set to go now.
But, in NVFlash Recovery it sais :
Please pick bootloader, or exit (1,X)? (I pressed 1)
Attempting to flash bootloader...
Nvflash started
USB device not found
Program will now exit​
So, I'm stuck.
The phone can be found both in Mass Storage mode and I got a OK that the drivers are installed.
Click to expand...
Click to collapse
Alright, it sounds like you still need the APX drivers. I believe you can find it somewhere on the Development forum (find tonyp's threads, I'm sure he has posted it there). If you already did this, then remember to hold and press both Vol buttons when selecting option 1 so Nvflash can connect to your device and do all the magic.
Don't give up yet, you're a few seconds away from rooting your device (and learning stuff at the same time ^^).

Tried exactly as you said but still no luck. But I'm not giving up!
I found a APX driver. Installed and unziped in the same file as NvFlash. Rebooted PC and tried again.
Still no luck - "USB device not found".
What am I doing wrong?
BEFORE removing the battery from mobile, shall I have Mass Storage or Charging marked?
Do I need to have USB Debugging marked or not?

Latest Update :
I managed to install Nvidia usb boot recovery in the device manager and it's OK.
The device is now found and I got the phone into S/W Upgrade please wait while upgrading-mode.
And there I am - stuck. Nothing more happens. It has freeze.
What do I do next?
A question : How do I "boot into cwm and flash SuperSU Root.zip" - how do I do that?

Nice! Has nvflash finished flashing? If so, it should be safe to unplug the device now.
Put the battery back on, press and hold both Power and Vol- at the same time until the second LG logo appears to enter CWM. From there, select "Install zip from SD card" (or something similar) and select the SU zip file you previously stored onto your sdcard. CWM will then flash the necessary files to root your device! Once done, reboot and enjoy!

Hi again! It's not going as well unfortunately. Very mysterious. *laugh*
"until the second LG logo appears to enter CWM. From there, select "Install zip from SD card"
When pressing Volyme - + Volyme up + Power I get a black screen. Nothing more happens.
And after flashing the flash-boot in NvFlash the phone goes into s/w upgrade please wait while upgrading-mode.
And there it is. Stuck. Nothing more happens. I repeted the procedure for 5 times. I only get to the s/w-mode.
After 3 hours I unplugged it and will restart my search today for what's blocking it to continue.
Hm? Hmmmm....? Any suggestions in what might be wrong?

You have to push and hold only Vol- and Power this time ^^ That will get you into CWM if the flash-boot.bat went right.

Great, I'm in!
But I managed to place the SU zip on wrong device (internal, not external).
How do I get out from cwm-mode, there's no "exit" options?

There should be a Reboot option, use it and your phone will boot as usual. When you're done moving the SU zip file to the external SD card, power off your 2X and do as instructed above to enter CWM again ^^

Thank you for replying so quickly!!!!!
There is a reboot option BUT I unfortunately pressed adb sideload (hoping to install the SU.zip that way, but the device is not to be found on the PC at all in that mode so I can't reach it through cmd either!).
So, I'm completely STUCK at adb sideolad-mode.... (sorry). I'm starting to get grey hair.

Hahahah XD don't worry, just remove the battery and put it back again ^^

*BIG SMILE* Guess what? I have root access! *jumping up and down of joy*
THANK YOU! THANK YOU! THANK YOU so very much for your guidance!
I believe in passing knowledge forward and I will do my best to help others noobs with what you just learned me!​
For a stubborn noob like me I was not reflecting over some obvious things though. As that the SU.zip had to be placed on SD-card (and not being unzipped in C: )
And that I had to get the Nvidia APX in order to make NvFlash to work properly (and search through Google to find it and how to make it work).
And that when I'm stuck in CWM I can always remove the battery.
Once again. I'm very glad and THANK you and all credit to You!

You know, I decided to help you because of your will to learn and do stuff by yourself. Many come here and ask for help without trying anything by themselves first, so I actually enjoyed watching you learn ^^
See? It wasn't that hard. All it takes is a lot of reading and patience.
Good job, and welcome to XDA!

Many Problems with installing Cyanogenmod on LG Optimus 4X HD...

Hello everybody,
so I'm as new to this forum as I am to the android world. Just this Wednesday i bought a new LG Optimus 4X HD on amazon.de
Thought it would be nice to start of with Cyanogenmod.
So I started my search for some good "How-To's"...it were many I went through and I already invested many hours in getting this running. Sadly it still doesn't work. I actually wanted to stay with one How-To but at one point there's always a download not working so that other sources are needed.
So what did I do...
-I rooted it yes (at this point I needed to download "Rooting Toolkit for Optimus 4X HD" which wasn't downloadable so i switched to another How-To, btw. first How-To: http://androidlegend.com/android-4-2-1-via-cyanogenmod-10-1-for-lg-optimus-4x-hd-p880-cm10-1/
-Installed "LG 4X Recovery 1.2" and installed this way CWM.
-At another point here I installed ROM Manager, installed it and went into Recovery and here happend the first problem, kernel panic.
Said something like "couldn't load kernel/wrong kernel", kernel panics...Me panics too
Anyway, force kill -> auto reboot -> still kernel panic -> again -> batterie out and a few times with usb cable connected to PC -> Batterie again, works :good:
Ok so Clockworkmods Rom Manager seemed to be not that good... did recovery boot with LG 4X Recovery, tada works, I go into the folder with the Cyanogenmod-zip and want to start the ROM installation and it says Status 7 (of course I googled Status 7 and searched here in the xda-boards for it, nothing helpful found yet)
Installed older version of LG 4X Recovery (1.1), still same fault.
I uninstall the ROM manager, redownload and reinstall, try to backup -> Kernel panic.
I search for a different How-To, yet nothing good happened. Others go something similar and say "at booting press On-Button and Volume down-button at the same time", I do that -> Kernel panic
I have no idea whats wrong with the kernel...but normal booting works fine.
Next I read something about needing to unlock bootloader, have a workthrough aka this http://forum.xda-developers.com/showthread.php?t=2224020
After I enter "adb reboot oem-unlock" in DOS command window it should say something concerning "open bootloader", but not in my case, just a normal reboot happened (this is what it looks like at least). Checking the hidden menu also doesn't show anything as I don't have the option with the boot-loader status there.
Next trick, I go to LG Recovery again and first wipe the whole stuff and try then the Cyanogen istall, still doesn't work and as I wasn't able to backups before (tried Titanium but it froze at 12% and the stuff about ROM Manager is told^^) I now had a clean factory install, all my work before lost, nothing rooted and still a kernel which panics when I do the "safe-boot"(this volume- and on-button-thing).
I also tried 3-All-in-one solutions, neither of them worked. (2 german ones, and one english one)
So I think thats it, ah wrong, still not finished. I also tried to install a new kernel to erase that f****ng problem with the kernel panic. I choose to use WerwewolfJB_v005 http://forum.xda-developers.com/showthread.php?t=2256899
the easy and fast way made the same as the try before with the "open bootloader"-try, just normal restart. When I enter the second line in the command line, it just says "waiting for device".
So yeah, thats it. I don't know what else to do. Does anyone know what I could also do, or is this case unsolvable? Is the Smartphone broken or did I make a mistake at any point? What should I do?
I'd be super glad if anyone could help me here. I hope I described my case well enough. I hope I didn't forget anything.
Thanks in advance!
Greetz chrisus

I am also new to this stuff but maybe i could help you anyway
What is the Firmware Version of your phone?
(Sorry for bad english )

The old "adb reboot oem-unlock" didn't work for me on UK, v234-000 either. I followed this thread instead and it worked perfectly first time.
As long as your phone has been turned on and connected to the network for long enough on v20x you should be fine - once you get the notification from LG about your phone being registered or similar then you'll be fine, normally a couple of hours.
Just reflash your phone to stock, wait for the notification and try the two-step method from the above post and you should be fine.

root , recorery and unlock boot loader
you must have your bootloader unlocked in order to flash kernels
( this worked for me but I can't guarantee it will work for others you can only try !! be aware when messing with firmware and bootloader you warranty could be voided )
make sure your phone is rooted you know if it is rooted because you will have superuser installed in your apps ( grey square icon with green android head on it ). if not I used this method to root my phone so try this http://forum.xda-developers.com/showthread.php?t=2180688
if your phone is rooted next you will need a recovery this will help to backup your phone and create a restore point so in case any thing goes wrong. to install a recovery go to play store and download rom manager ( clockworkmod ) once installed open rom manger and select recovery setup. then select install or update recovery then select your phone ( lg optimus 4x hd). then select flash clockworkmod recovery. and then wait while it downloads and setup . hopefully when finished it will say succesfull. ( make sure phone is rooted or it wont work ) to check clockwork mod is working you can reboot into recovery through rom manager or power off phone then hold volume down key press power button to power up but keep holding volume down key until recovery boot up. ( be a wise option to backup phone now in recovery)
next to unlock bootloader ( so you can flash roms with kernels) go to this thread, http://forum.xda-developers.com/showthread.php?t=2224020
and download the BL_unlock_new .rar file when its download copy it to your desktop on pc and then extract it to desktop on pc . now make sure your phone is not connected to your computer go to phone settings,then go to development options, and then select usb debugging on. once debugging is on now connect your phone to pc wait for it to connect you can keep your phone on charging mode. now open the BL_unlocking_new extracted folder on desktop on pc and double click on the BL_unlock file a box should open up on your desktop asking you to tap a key to continue so press a key now your phone should reboot and some white writing will appear on screen .on your desktop the bottom line should say please... now tap a key on computer it should say press any key to continue < waiting for device> now disconnect phone from computer look on phone screen it should say now ready! now hold power button for 10 secs and let phone reboot. to test if bootloader is unlocked on phone go to dail pad and dail this 3845#*880# you should get the hidden menu on your screen scroll down to bootloader unlock check and select then select bootloader unlock check and hopefully it should say unlock...
now you have root , recovery and bootloader unlock, now you can download a rom for this phone copy rom ( should be a zip file ) to your phone then open rom manager on phone and reboot in to recovery or power off phone, hold volume down button then press power button should now boot into recovery then you want to use volume keys to scroll down and select wipe data/factory reset with power button then scroll down and select advanced then scroll down and select wipe dalvik cache then you want to select go back then select install zip from sd card then select where you saved your rom sd card or external sd card then select rom then select install...
hopefully if that's helped you or anybody else ...

Hursty uk said:
next to unlock bootloader ( so you can flash roms with kernels) go to this thread, http://forum.xda-developers.com/showthread.php?t=2224020
and download the BL_unlock_new .rar file
Click to expand...
Click to collapse
If the OP can possibly get his bootloader unlocked following the official method then he should, rather than using that file. Nobody really knows what all the 'fuses' that are blown by using that file do and that would certainly result in his warranty being voided in any country, whereas in a lot of countries his warranty won't actually be voided by using the official unlock method.

added warning
SimonTS said:
If the OP can possibly get his bootloader unlocked following the official method then he should, rather than using that file. Nobody really knows what all the 'fuses' that are blown by using that file do and that would certainly result in his warranty being voided in any country, whereas in a lot of countries his warranty won't actually be voided by using the official unlock method.
Click to expand...
Click to collapse
edited last post with a warning you could void warranty !!

Ok, thanks for the answers so far. But still, wasn't able to get any further.
@Dexxon: Firmware version is 4.0.3
Besides: Kernel Version is 2.6.39.4 and there's also something written like "[email protected] #1" in the hidden menu...is this normal? AP Bootloader Verison unknown and AP OS Version is 2.6.39.4 also this jinwoo...
@SimonTS: I tried to unlock the bootloader with your link and advices (which is the same as i tried before).
Got a message saying "Thanks for buying this LG Phone..blabla" and I guess thats what you mentantioned about that informing.
Battery was loaded to 100% so i connected it to PC, said "LG Software Mode Connection" on the phone (before I always took that "data exchange connection"), went to the adb folder and made a command window there, entered "adb reboot-bootloader", smartphone reboots, should stay in LG window screen, but it doesn't. It just boots totally normal into the home screen.
@Hursty uk: As I said in the first post. Everything regarding the ROM Manager from CWM sends my Phone into kernel panic. As this is quite hard to get a normal reboot again (even battery out for some time and back-in doesn't solve this) I really prefere to not use this option. As it is just frustrating and doesn't help.
And yes it is already rooted (I have SuperSU and I checked it with the "Root Checker"-App) Everything says it is rooted. I rooted it with that method: androidlegend.com/how-to-root-lg-optimus-4x-hd-o4x-p880
Ah I really don't know what else to do. Is something just wrong with my device?
btw I also can't do a software update with the LG Software from there website, so I could at least go 4.1 instead of 4.0.3 atm...
When I try it that way, and install the USB-Drvier for LG P880 the SW-Update button stays grey and is unclickable even though the phone is connected.

chrisus said:
Ok, thanks for the answers so far. But still, wasn't able to get any further.
@Dexxon: Firmware version is 4.0.3
Besides: Kernel Version is 2.6.39.4 and there's also something written like "[email protected] #1" in the hidden menu...is this normal? AP Bootloader Verison unknown and AP OS Version is 2.6.39.4 also this jinwoo...
@SimonTS: I tried to unlock the bootloader with your link and advices (which is the same as i tried before).
Got a message saying "Thanks for buying this LG Phone..blabla" and I guess thats what you mentantioned about that informing.
Battery was loaded to 100% so i connected it to PC, said "LG Software Mode Connection" on the phone (before I always took that "data exchange connection"), went to the adb folder and made a command window there, entered "adb reboot-bootloader", smartphone reboots, should stay in LG window screen, but it doesn't. It just boots totally normal into the home screen.
@Hursty uk: As I said in the first post. Everything regarding the ROM Manager from CWM sends my Phone into kernel panic. As this is quite hard to get a normal reboot again (even battery out for some time and back-in doesn't solve this) I really prefere to not use this option. As it is just frustrating and doesn't help.
And yes it is already rooted (I have SuperSU and I checked it with the "Root Checker"-App) Everything says it is rooted. I rooted it with that method: androidlegend.com/how-to-root-lg-optimus-4x-hd-o4x-p880
Ah I really don't know what else to do. Is something just wrong with my device?
btw I also can't do a software update with the LG Software from there website, so I could at least go 4.1 instead of 4.0.3 atm...
When I try it that way, and install the USB-Drvier for LG P880 the SW-Update button stays grey and is unclickable even though the phone is connected.
Click to expand...
Click to collapse
To unlock the bootloader following either of the official methods requires you to be running v20x (The LG Stock v4.1 code) first, so that is why the commands are doing nothing for you.
For the moment, forget about CWM, Root, Bootloaders etc - the key thing is to get your phone working again. Can you reinstall stock v10x software following the guide on this page?

SimonTS said:
To unlock the bootloader following either of the official methods requires you to be running v20x (The LG Stock v4.1 code) first, so that is why the commands are doing nothing for you.
For the moment, forget about CWM, Root, Bootloaders etc - the key thing is to get your phone working again. Can you reinstall stock v10x software following the guide on this page?
Click to expand...
Click to collapse
He might as well just flash JB with flashtool, saves him flashing ICS just to flash JB straight after
Sent from my rooted P880

SimonTS said:
To unlock the bootloader following either of the official methods requires you to be running v20x (The LG Stock v4.1 code) first, so that is why the commands are doing nothing for you.
For the moment, forget about CWM, Root, Bootloaders etc - the key thing is to get your phone working again. Can you reinstall stock v10x software following the guide on this page?
Click to expand...
Click to collapse
that would of been my next answer @SimonTS . A while back a flashed something on my phone and it got stuck at the lg bootup picture what I had to do was re-install original firmware ( through KDZ files) to get my phone working. I would try the link @SimonTS suggested .

@non4 said:
He might as well just flash JB with flashtool, saves him flashing ICS just to flash JB straight after
Click to expand...
Click to collapse
Indeed - sorry, having a slightly dense day and was more thinking about getting him back to the stage at which his phone was working correctly before.

SimonTS said:
To unlock the bootloader following either of the official methods requires you to be running v20x (The LG Stock v4.1 code) first, so that is why the commands are doing nothing for you.
For the moment, forget about CWM, Root, Bootloaders etc - the key thing is to get your phone working again. Can you reinstall stock v10x software following the guide on this page?
Click to expand...
Click to collapse
Thanks for that link, I tried it but that also didn't work (at least I guess so...)
I did everything like said at the link but at the last point the program (kdz_fw_upd.exe) crashes. Tried it 3 times, every time as administrator like mentioned in that forum post. I'm using Win 8 64bit btw...
Screenshot is in the attached .jpg. My system is japanese, but I think you can figure out what this kind of window means. It just says that the program isn't responding and needs to be shutdown.
I tried it like mentioned with putting the battery back in when the log starts and without putting it back in, in both cases the program crashes after a few seconds (~10 secs) when started.
Where do I actually see which V**x version is installed? If v10x or v20a? Surprisingly the LG Support Tool said I have v10H when the phone was still connected after the crash. And it offered me a SW-Update. But I haven't done that one yet, not sure if that would work correct...

@ chrisus
man, what is your phone status now?
in what situation you are actually?

gtdaniel said:
@ chrisus
man, what is your phone status now?
in what situation you are actually?
Click to expand...
Click to collapse
Freshly wiped so its factory reset, just rooted and LG 4X Recovery installed (for CWM touch). Nothing more.
Following Informations from Root Checker-App:
Product: x3_open_eu
Host: buildgb2
User: jinwoo.lee (wtf? i don't know what should be here at the point user, but that is clearly not me, is this factory set style?)
Additional Phone Informations from settings:
Android version: 4.0.3
Kernel version: 2.6.39.4
Build number: IML74K
Software version: LG-P880-V10h-NOV-19-2012 (ah now I see where that v10x-info is^^)

chrisus said:
Freshly wiped so its factory reset, just rooted and LG 4X Recovery installed (for CWM touch). Nothing more.
Following Informations from Root Checker-App:
Product: x3_open_eu
Host: buildgb2
User: jinwoo.lee (wtf? i don't know what should be here at the point user, but that is clearly not me, is this factory set style?)
Additional Phone Informations from settings:
Android version: 4.0.3
Kernel version: 2.6.39.4
Build number: IML74K
Software version: LG-P880-V10h-NOV-19-2012 (ah now I see where that v10x-info is^^)
Click to expand...
Click to collapse
cool!
i am glad you can bring the phone in working status again.
now you have to do to put cyanogen on your phone is:
1. install JB 4.1.2 update
2. root it again
3. install CWM Recovery again
4. unlock bootloader
for first step go to:
http://csmg.lgmobile.com:9002/csmg/b2c/client/auth_model_check2.jsp?esn=
after <=> put your IMEI number
and download a v20a version compatible with your device
and apply update
if you are again in trouble post here...
and if you are else to do, please post here to not make to loose time...

gtdaniel said:
cool!
i am glad you can bring the phone in working status again.
now you have to do to put cyanogen on your phone is:
1. install JB 4.1.2 update
2. root it again
3. install CWM Recovery again
4. unlock bootloader
for first step go to:
http://csmg.lgmobile.com:9002/csmg/b2c/client/auth_model_check2.jsp?esn=
after <=> put your IMEI number
and download a v20a version compatible with your device
and apply update
if you are again in trouble post here...
and if you are else to do, please post here to not make to loose time...
Click to expand...
Click to collapse
+1 this. Also, there have been many problems with running these apps using Windows 8, and you need to make sure you're not using a USB 3 port as they being other problems in to the equation.

gtdaniel said:
cool!
i am glad you can bring the phone in working status again.
now you have to do to put cyanogen on your phone is:
1. install JB 4.1.2 update
2. root it again
3. install CWM Recovery again
4. unlock bootloader
for first step go to:
http://csmg.lgmobile.com:9002/csmg/b2c/client/auth_model_check2.jsp?esn=
after <=> put your IMEI number
and download a v20a version compatible with your device
and apply update
if you are again in trouble post here...
and if you are else to do, please post here to not make to loose time...
Click to expand...
Click to collapse
Ok so I've flashed JB with the LG Updater (without batterie and volume down button pressed connecting to PC, than start the update -> meanwhile putting batterie back in)
JB worked just fine and I also don't had the problem with the kernel panic when booting with volume down and power button.
So I thought, everything fresh and also different, I might give the ROM Manager App again a try (after I rooted it that way: http://forum.xda-developers.com/showthread.php?t=2180688 )...well, wasn't that smart. After I installed the Recovery for P880 in the ROM Manager, i made a normal boot (just for sure), back in the app, i wanted to go into Recovery mode and again kernel panic, bit different this time cause it does a shutdown after 5 seconds^^
Anyway, this way it didn't work, from now on I also couldn't go into safe mode anymore, same kernel panic.
As this kind of recovery doesn't seem to work, I tried the "old" way with the "LG 4X Recovery" I mentioned before. After recovery installation i just wanted to boot normal aaaand nothing happened. It stayed in the LG screen. Restart and anything didn't help here so I backed back to v10H with previous methods. Now I just got a security error saying "morning call is empty", no idea what that means but I just did the same method for JB again.
Worked afterwards, so I wanted to try it without ROM Manager Recovery installed and just LG 4X Recovery, (after rooted again of course) and it didn't boot again. Same game again.
So now I have JB installed, I'm going to root it now again, but I don't know what way I should go for doing the Recovery Part. I'm stuck on point 3 here
Any advices? btw thanks a lot until here, at least I made it half-way-through to JB now. Worst case I'd stay with that one at least.

I'm not entirely sure which threads you've been reading. Once you have the stock v20x ROM on your phone, just leave it alone for a few hours and make sure it is fully charged
After that, try to unlock the bootloader before doing anything else. If that works then you can worry about CWM and custom ROMs.

chrisus said:
Ok so I've flashed JB with the LG Updater (without batterie and volume down button pressed connecting to PC, than start the update -> meanwhile putting batterie back in)
JB worked just fine and I also don't had the problem with the kernel panic when booting with volume down and power button.
So I thought, everything fresh and also different, I might give the ROM Manager App again a try (after I rooted it that way: http://forum.xda-developers.com/showthread.php?t=2180688 )...well, wasn't that smart. After I installed the Recovery for P880 in the ROM Manager, i made a normal boot (just for sure), back in the app, i wanted to go into Recovery mode and again kernel panic, bit different this time cause it does a shutdown after 5 seconds^^
Anyway, this way it didn't work, from now on I also couldn't go into safe mode anymore, same kernel panic.
As this kind of recovery doesn't seem to work, I tried the "old" way with the "LG 4X Recovery" I mentioned before. After recovery installation i just wanted to boot normal aaaand nothing happened. It stayed in the LG screen. Restart and anything didn't help here so I backed back to v10H with previous methods. Now I just got a security error saying "morning call is empty", no idea what that means but I just did the same method for JB again.
Worked afterwards, so I wanted to try it without ROM Manager Recovery installed and just LG 4X Recovery, (after rooted again of course) and it didn't boot again. Same game again.
So now I have JB installed, I'm going to root it now again, but I don't know what way I should go for doing the Recovery Part. I'm stuck on point 3 here
Any advices? btw thanks a lot until here, at least I made it half-way-through to JB now. Worst case I'd stay with that one at least.
Click to expand...
Click to collapse
ok.
now i suppose you have a functional rooted JB 4.1.2 device.
from that you have to going on to rest of the steps to have CM installed on your device.so if it is not that (functional rooted JB device) is need to flash again JB and rooted again.
if you have the proper kdz file the tutorial for flasing is there: http://forum.xda-developers.com/showthread.php?t=2069723
and the tutorial for rooting device is there: http://forum.xda-developers.com/showthread.php?t=2180688&highlight=root+jb+4+1+2+
after that make some reboot of device to verify that:
1. the device boot to system normaly a few times (just let the device boot itself)
2. the device enter in S/W Upgrade Mode (with the device off, put the USB cable in device and PC or in device and AC adapter and press VOL DOWN + POWER) a few times
3. the device boot in Stock Recovery (with the device off, press VOL DOWN + POWER) a few time.
if you can manage to do this tree steps a few times normaly then you have a fully functional device and we go to next step that is Custom Recovery
the chance to make this steps without errors is more big if you start from scratch meaning fully wipe the device and flashing stock LG software on the device.
so, let as know here when you are ready...

gtdaniel said:
ok.
now i suppose you have a functional rooted JB 4.1.2 device.
from that you have to going on to rest of the steps to have CM installed on your device.so if it is not that (functional rooted JB device) is need to flash again JB and rooted again.
if you have the proper kdz file the tutorial for flasing is there: http://forum.xda-developers.com/showthread.php?t=2069723
and the tutorial for rooting device is there: http://forum.xda-developers.com/showthread.php?t=2180688&highlight=root+jb+4+1+2+
after that make some reboot of device to verify that:
1. the device boot to system normaly a few times (just let the device boot itself)
2. the device enter in S/W Upgrade Mode (with the device off, put the USB cable in device and PC or in device and AC adapter and press VOL DOWN + POWER) a few times
3. the device boot in Stock Recovery (with the device off, press VOL DOWN + POWER) a few time.
if you can manage to do this tree steps a few times normaly then you have a fully functional device and we go to next step that is Custom Recovery
the chance to make this steps without errors is more big if you start from scratch meaning fully wipe the device and flashing stock LG software on the device.
so, let as know here when you are ready...
Click to expand...
Click to collapse
he should unlock bootloader before flashing custom recovery.
so, dont use rom manager before you unlock bootloader, that's why you get kernel panics.

Really (I mean *really*!) bricked my phone. Nothing works.

Hi p970ies,
EDIT: NEW problems, see last pages.
here is my story:
I was on IZS v1.1, when I decided to go into recovery and make a full-wipe for having a "fresh install" again. You know, the phone was laggy, I had to many apps etc. I pressed the on/off-button for 1-2 secs to reboot into recovery, then my phone turned off and restarted but just with a "bright" black screen, the display was on. I thought "something went wrong", pulled the battery out and put it back in again, started, but then same screen again.
A few months ago an easy "unbricking" method (I know, not really unbricking) was to flash Redy2006's touch-recovery and boot into it with his scripts. So I flashed it (I know it's dumb, because of the u-boot and v30 thing, Idk), same result.
After that, I grabbed smartflash and two .bin/.fls packs of 2 roms, went into that special mode (phone off, press vol+, plug in) but there was no "sign" (screen that shows that you are in that mode) like the other day, the screen kept being black, but on.
Nonetheless the flashing worked and the software said everything alright. I started the phone but same result, in addition that there was now this effect: When the battery is put in and/or the phone is charging, the screen changes from being on and off. I can't do anything, no restarting with buttons, no LG screen, nothing but on and off, on and off. Every few seconds.
Thank you, I hope you experts can help me. (Even when I have the phone 2 years now and I was a ROM-junkie since the first day )
Edit: Tried smartflash with another patched v20 ROM. Tried KDZ Updater, just errors. But now the phone seems to boot, but there's nothing on the display, just the 4 softkeys are fading in and out.

Tomatengelee said:
Hi p970ies,
here is my story:
I was on IZS v1.1, when I decided to go into recovery and make a full-wipe for having a "fresh install" again. You know, the phone was laggy, I had to many apps etc. I pressed the on/off-button for 1-2 secs to reboot into recovery, then my phone turned off and restarted but just with a "bright" black screen, the display was on. I thought "something went wrong", pulled the battery out and put it back in again, started, but then same screen again.
A few months ago an easy "unbricking" method (I know, not really unbricking) was to flash Redy2006's touch-recovery and boot into it with his scripts. So I flashed it (I know it's dumb, because of the u-boot and v30 thing, Idk), same result.
After that, I grabbed smartflash and two .bin/.fls packs of 2 roms, went into that special mode (phone off, press vol+, plug in) but there was no "sign" (screen that shows that you are in that mode) like the other day, the screen kept being black, but on.
Nonetheless the flashing worked and the software said everything alright. I started the phone but same result, in addition that there was now this effect: When the battery is put in and/or the phone is charging, the screen changes from being on and off. I can't do anything, no restarting with buttons, no LG screen, nothing but on and off, on and off. Every few seconds.
Thank you, I hope you experts can help me. (Even when I have the phone 2 years now and I was a ROM-junkie since the first day )
Edit: Tried smartflash with another patched v20 ROM. Tried KDZ Updater, just errors. But now the phone seems to boot, but there's nothing on the display, just the 4 softkeys are fading in and out.
Click to expand...
Click to collapse
Oh man, its sad to hear that.
I can just think on two situations.
One is a broken screen, but thats pretty obvious.
And the other is a broken boot partition. Its very strange that you cant get into software upgrade mode. You sure you removed SIM, battery and SD, and then plugged it to the cable while holding the volume buttons?
I dont doubt you did it well, just making sure. Anyways AFAIK you should be able to enter that mode unless you got a broken boot partition.
Best of luck, sorry Im not of much help.

Grakel said:
Oh man, its sad to hear that.
I can just think on two situations.
One is a broken screen, but thats pretty obvious.
And the other is a broken boot partition. Its very strange that you cant get into software upgrade mode. You sure you removed SIM, battery and SD, and then plugged it to the cable while holding the volume buttons?
I dont doubt you did it well, just making sure. Anyways AFAIK you should be able to enter that mode unless you got a broken boot partition.
Best of luck, sorry Im not of much help.
Click to expand...
Click to collapse
Hi, thank you for your answer.
Yesterday oder so, I connected my phone without SIM, SD and battery while pressing vol+ to my pc and it showed the S/W-Update "Wait while update is in progress" or something. I was happy because the display isn't broken. But then I flashed again and the display is as black as before...
I thought about a broken bootloader. Do you guys know a way to fix it? Or the boot partition?

Tomatengelee said:
Hi, thank you for your answer.
Yesterday oder so, I connected my phone without SIM, SD and battery while pressing vol+ to my pc and it showed the S/W-Update "Wait while update is in progress" or something. I was happy because the display isn't broken. But then I flashed again and the display is as black as before...
I thought about a broken bootloader. Do you guys know a way to fix it? Or the boot partition?
Click to expand...
Click to collapse
Im pretty sure that if you can see the software update mode, you can unbrick the device.
When you said you reflashed something, do you actually mean that you smartflashed the fls and bin files from a stock v20 rom? AFAIK the bin file carries a bootloader with it so it should get fixed if your problem is the bootloader.
And by the way, while the phone has that black screen and is stuck booting... Are you able to use adb commands? You could try to jump to the recovery with "adb reboot recovery" to see if you got a working recovery.
Best of luck, tell me how it goes

Grakel said:
Im pretty sure that if you can see the software update mode, you can unbrick the device.
When you said you reflashed something, do you actually mean that you smartflashed the fls and bin files from a stock v20 rom? AFAIK the bin file carries a bootloader with it so it should get fixed if your problem is the bootloader.
And by the way, while the phone has that black screen and is stuck booting... Are you able to use adb commands? You could try to jump to the recovery with "adb reboot recovery" to see if you got a working recovery.
Best of luck, tell me how it goes
Click to expand...
Click to collapse
yep, I tried every version (10, 20, 30) in bin/fls and kdz. But I never got the screen to show something again.
And no, I can't use adb commands, sadly. It says "cannot find device" or something like that.

Tomatengelee said:
yep, I tried every version (10, 20, 30) in bin/fls and kdz. But I never got the screen to show something again.
And no, I can't use adb commands, sadly. It says "cannot find device" or something like that.
Click to expand...
Click to collapse
Huhmmm... Quite strange.
You can try to open up device manager, look for the phone (will probably have no drivers and the icon will have a yellow triangle) and force installing adb drivers. After that you are supposed to use adb even in middle of a boot.
I'd say that your best chance is to get to your recovery, so you can wipe everything (even formatting system) and start from scratch...
Anyways Im no expert at all... Just trying to help.

Grakel said:
Huhmmm... Quite strange.
You can try to open up device manager, look for the phone (will probably have no drivers and the icon will have a yellow triangle) and force installing adb drivers. After that you are supposed to use adb even in middle of a boot.
I'd say that your best chance is to get to your recovery, so you can wipe everything (even formatting system) and start from scratch...
Anyways Im no expert at all... Just trying to help.
Click to expand...
Click to collapse
Sometimes ADB works, but it says "device offline". When I flashed PRE-IZS fls/bin from the spanish forum, and then V30B bin/fls, something really weird happens: The phone is on, the wake-button works well - it turns on and turns off the display and the softkeys. But the screen doesn't show anything - just black.

Hello there!
Did You try out the B2C tool provided by LG? And there is one other tool provided by LG. Just try these oit. If they dont work, then try claiming it under warranty. They might replace the motherboard.
P.S: If You have the money, sell this piece of **** and get a Sony or Samsung. Cheers!
Sent from my LG-P970 using xda app-developers app

rokr05 said:
Hello there!
Did You try out the B2C tool provided by LG? And there is one other tool provided by LG. Just try these oit. If they dont work, then try claiming it under warranty. They might replace the motherboard.
P.S: If You have the money, sell this piece of **** and get a Sony or Samsung. Cheers!
Sent from my LG-P970 using xda app-developers app
Click to expand...
Click to collapse
I think I'm going to buy a Nexus 4, but I have to convince my parents
Oh and yes, phone is older than 2 years and in Germany we only have 2 years of warranty I think.

Tomatengelee said:
Sometimes ADB works, but it says "device offline". When I flashed PRE-IZS fls/bin from the spanish forum, and then V30B bin/fls, something really weird happens: The phone is on, the wake-button works well - it turns on and turns off the display and the softkeys. But the screen doesn't show anything - just black.
Click to expand...
Click to collapse
An easy, possible fix for The Device offline is to use the latest ADB. Just use the attached zip anywhere and use ADB, its the latest version from the android SDK, but just the files required for ADB. My nexus 4 had the same problem, but Solved it by updating ADB.

ykumar00 said:
An easy, possible fix for The Device offline is to use the latest ADB. Just use the attached zip anywhere and use ADB, its the latest version from the android SDK, but just the files required for ADB. My nexus 4 had the same problem, but Solved it by updating ADB.
Click to expand...
Click to collapse
damn it says "error: device not found" when in S/W or bootloop... or device offline in bootloop
any ideas?

did you try patched bins ? (for being able to boot into recovery right after the flash process, maybe you just need right wipes)
#700th post yay...

Ilko said:
did you try patched bins ? (for being able to boot into recovery right after the flash process, maybe you just need right wipes)
#700th post yay...
Click to expand...
Click to collapse
Yes, I did, but Smartflash works "less" than the KDZ-Updater. Actually the phone beeped today while it was on (with some kdz flashed) :silly:
Is it possible to convert patched bin/fls files to kdz?

I don't know, probably not... what I can say is that kdzu doesn't perform full wipes since it's intended to update the system and keep datas at the same time. You probably need wipes...

Ilko said:
I don't know, probably not... what I can say is that kdzu doesn't perform full wipes since it's intended to update the system and keep datas at the same time. You probably need wipes...
Click to expand...
Click to collapse
Oh ok... But with KDZ-Updater, it's possible to turn the phone off and on (screens is "on" but shows the color black while the softkeys are on too).
I'll try again with Smartflash... Do you know another version of it or a good tutorial? Maybe I've done the wrong method or something...

there are several tuts in this forum. smartflash is the quickest and safest way to restore / unbrick as it erases everything in the internal memory

Ilko said:
there are several tuts in this forum. smartflash is the quickest and safest way to restore / unbrick as it erases everything in the internal memory
Click to expand...
Click to collapse
I know, but it never works. That problem is so weird! :silly:
Man, nothing works... After smartflashing display flashing off and on again, after kdz display on, softkeys flashing

ADB side service is not active while in S/W mode. The only chance to access to recovery is to boot normally, and access to the device via ADB. The problems are : device needs to pass initial boot process for being able to be detected by ADB (even if you don't see the desktop it's ok), and USB debug must be enabled by default...
so, if you can't pass initial boot process, no chance to use ADB, and, if it passes, usb debug must be enabled or device will remain offline...

Ilko said:
ADB side service is not active while in S/W mode. The only chance to access to recovery is to boot normally, and access to the device via ADB. The problems are : device needs to pass initial boot process for being able to be detected by ADB (even if you don't see the desktop it's ok), and USB debug must be enabled by default...
so, if you can't pass initial boot process, no chance to use ADB, and, if it passes, usb debug must be enabled or device will remain offline...
Click to expand...
Click to collapse
Is there a chance to enable it manually?

the only chance is to flash a ROM which have it enabled by default for the most of them.
mine died because of the new twrp 2.6. It has definitively corrupted the boot partition as even smartflash can't ends its process. I had to buy another device...

I have a paperweights, help...

I have root and unlocked bootloader. I did an update of lg and thereafter blocked, do not know if this was the problem.
Install the CWM by room (room enox iodak08 +), I can enter the bootloader, installing, when reboot the sistem entering the boot but does not start with the system and back to CWM after being taken. I can not get into the room and I can get into CWM. I've done factory reset and wipecache, I returned instal to the room, and nothing, enters the boot but does not start with the room.
I'm in a tricky situation, I stopped to have a mobile phone and I stick one paperweights. Need a little help.

Manholas said:
I have root and unlocked bootloader. I did an update of lg and thereafter blocked, do not know if this was the problem.
Install the CWM by room (room enox iodak08 +), I can enter the bootloader, installing, when reboot the sistem entering the boot but does not start with the system and back to CWM after being taken. I can not get into the room and I can get into CWM. I've done factory reset and wipecache, I returned instal to the room, and nothing, enters the boot but does not start with the room.
I'm in a tricky situation, I stopped to have a mobile phone and I stick one paperweights. Need a little help.
Click to expand...
Click to collapse
As always - flash a kdz and start from scratch if you can't get it working. And ... SEARCH

SimonTS said:
As always - flash a kdz and start from scratch if you can't get it working. And ... SEARCH
Click to expand...
Click to collapse
I can not get the pc to recognize the phone. I already have the KDZ file (V20A_00.kdz)

Manholas said:
I can not get the pc to recognize the phone. I already have the KDZ file (V20A_00.kdz)
Click to expand...
Click to collapse
Install or reinstall latest drivers from LG and try again when it does'nt work change usb port or try it on other PC.
Good Luck..

as I am in CWM recovery, removed the sd card and put a room.zip and flash. Did the installation but when "reboot sistem" back to cwm recovery.

The problem is that the Phone was locked into CWM recovery. And I have no way to recognize the phone on PC. Is there any way to unlock the CWM recovery v6.0.4.5?

Manholas said:
The problem is that the Phone was locked into CWM recovery. And I have no way to recognize the phone on PC. Is there any way to unlock the CWM recovery v6.0.4.5?
Click to expand...
Click to collapse
no. boot into s/w mode and flash kdz. there are plenty of guides. if your pc cant detect your phone while it's in s/w mode, then reinstall drivers

Manholas said:
The problem is that the Phone was locked into CWM recovery. And I have no way to recognize the phone on PC. Is there any way to unlock the CWM recovery v6.0.4.5?
Click to expand...
Click to collapse
As you stated in your first post...
Manholas said:
I have root and unlocked bootloader. I did an update of lg and thereafter blocked, do not know if this was the problem.
Click to expand...
Click to collapse
It has been stated time and time again that your must NEVER carry out a vendor OTA on a rooted or modified device. It causes a problem 90% of the time as the OTA has no flexibility to deal with something it isn't expecting to find - so you get exactly what you have.
Just be thankful that it is almost impossible to hard-brick our device or you really would have a paperweight. Instead you just need to search and read a little to get it back up and running.

Flying_Bear said:
no. boot into s/w mode and flash kdz. there are plenty of guides. if your pc cant detect your phone while it's in s/w mode, then reinstall drivers
Click to expand...
Click to collapse
If you turn on the mobile it goes into CWM recovery. The problem is that the Phone was locked into CWM recovery. And I have no way to recognize the phone on PC. Is there any way to unlock the CWM recovery v6.0.4.5?

SimonTS said:
As you stated in your first post...
It has been stated time and time again that your must NEVER carry out a vendor OTA on a rooted or modified device. It causes a problem 90% of the time as the OTA has no flexibility to deal with something it isn't expecting to find - so you get exactly what you have.
Just be thankful that it is almost impossible to hard-brick our device or you really would have a paperweight. Instead you just need to search and read a little to get it back up and running.
Click to expand...
Click to collapse
Ok, thanks for the warning was a real oversight. But, .. and help. I'm just locked into CWM recovery and I can not enter the phone otherwise. thanks

Flying_Bear said:
no. boot into s/w mode and flash kdz. there are plenty of guides. if your pc cant detect your phone while it's in s/w mode, then reinstall drivers
Click to expand...
Click to collapse
Manholas said:
Ok, thanks for the warning was a real oversight. But, .. and help. I'm just locked into CWM recovery and I can not enter the phone otherwise. thanks
Click to expand...
Click to collapse
As @Flying_Bear has already said to you...

Manholas said:
Ok, thanks for the warning was a real oversight. But, .. and help. I'm just locked into CWM recovery and I can not enter the phone otherwise. thanks
Click to expand...
Click to collapse
You need to get your PC to recognise the phone, thats the first step in this repair (unless the usb port is broken, there's no reason why it wont recognise, whats your OS and version, usb 2 or 3?)
why not put cm10.1 on a microsd and flash it from there?

JoinTheRealms said:
You need to get your PC to recognise the phone, thats the first step in this repair (unless the usb port is broken, there's no reason why it wont recognise, whats your OS and version, usb 2 or 3?)
why not put cm10.1 on a microsd and flash it from there?
Click to expand...
Click to collapse
it still won't work, after upgrading it ota while having custom recovery installed, a person will be locked to recovery for some reason (atleast other people were). the only way to fix it that i know of is to reflash a kdz
Manholas said:
If you turn on the mobile it goes into CWM recovery. The problem is that the Phone was locked into CWM recovery. And I have no way to recognize the phone on PC. Is there any way to unlock the CWM recovery v6.0.4.5?
Click to expand...
Click to collapse
cmon, pay some attention you don't need to turn on the phone, or boot into the system itself to boot into s/w mode. now, there are tons (like 3 or 4 guides, plus many other topics opened by people with exact same problem like you) threads that tell you what to do (hint: figure out how to boot into s/w mode), so i'll let you search around for the guide.

I suggest using this method: http://forum.xda-developers.com/showthread.php?t=2682146
It's easier, faster and safer than flashing a .kdz file. (Plus, it tells you how to get into the s/w upgrade mode!)
Greetings from my Nexus 7 FHD!

balloon27 said:
I suggest using this method: http://forum.xda-developers.com/showthread.php?t=2682146
It's easier, faster and safer than flashing a .kdz file. (Plus, it tells you how to get into the s/w upgrade mode!)
Greetings from my Nexus 7 FHD!
Click to expand...
Click to collapse
I think this method also flashes a kdz, but does it automatically for you. But yeah, this one is easier than manually flashing. Thanks for posting it
Also, thiy method will format internal sd card. My suggestion is to do a data/system format from cwm before you go in to flashing a kdz, either manually or automatically, so you don't end up with formatted internal sd card

A big thanks to SimonTS, JoinTheRealms, Flying_Bear and balloon27. This is a fantastic forum and you guys are spectacular. Due to professional reasons only going back to the forum after seven days, I go to the sea and I'm without net. Got this getaway just to thank you for the care provided, the mobile phone is the same and will just touch it after a week. Once again, thank you very much.

I just make the process advised by balloon27 (http://forum.xda-developers.com/show....php?t=2682146). I have my 4X hd back .... yupi, yupi, yupi, yupi, yupi, ..... you guys are just the greatest. Once again a big thank you all of you. The 4X HD is working like a charm, a thank-you to the forum.

[SOLVED] I'm possibly bricked.

Okay, so, I know it's possible to fix this, it has to be. And let me explain why I can conclude this.
1.) I can access Philz recovery but ONLY when forcing the phone to hard reset via buttons.
2.) The touchscreen works in the recovery when resetting but doesn't go to the main menu or anything to restore a backup.
3.) The phone will recognize adb commands from the computer, but since the touches don't work when booted I cannot select the "allow this computer" prompt.
4.) The phone boots into the CM11 ROM and the buttons work (I can change volume, take screenshots, and access power menu.)
So, I'll explain what happened. I tested a boot.img for Quarx and flashed it. I didn't reboot my phone, just let it stay on. It worked and everything, but a little bit after church it rebooted on me and showed the CM setup menu. I was like, "What? Okay..." So I was going trying to make it work, but I realized the touchscreen wouldn't respond to my touches. I locked/unlocked the screen, rebooted, all that good stuff, and none of it worked. So, here's the damage done.
1.) I can't touch anything on the screen. It won't respond to touches.
2.) I cannot access recovery, only hard reset.
3.) I cannot approve adb commands because I need to hit "allow" on the screen. (The prompt does come up though)
So, I have a phone that boots, responds to hardware actions, and can recognize adb commands, but won't accept them unless I say "allow." I can access recovery but only when factory resetting through holding Power + VOL DOWN when booting. The touchscreen works in recovery, but it won't do any actions (back, home, etc.) because it's resetting. After resetting it boots instantly, and voila, my problem remains.
So in short, I need a way to bypass that "authentication" for adb, because in order for fastboot to recognize my device I need to run adb commands to set it up (since that's gone too now). That, or, I need to find a way to access Philz recovery without having to use the touchscreen. It's so frustrating because the one button I need to press is literally right in front of my face, on my screen, but it won't respond to my input.
Does anybody here have any suggestions? I haven't been able to flash a KDZ successfully, I don't know why. It never works for me on this phone. I was a pro at it on the L9. School begins in a week and I need to have a phone that works, for transportation and such. I'm not really at a point to buy a phone right now either since I'm focusing on buying my first car (yay I guess).
If anyone can help I'd really appreciate it. In fact, I'm even willing to donate money to whomever can point me in the right direction.

http://forum.xda-developers.com/lg-l90/general/guide-flash-stock-kdz-offline-lg-l90-t2803479
follow this guide and reflash KDZ

Ilxaot said:
Okay, so, I know it's possible to fix this, it has to be. And let me explain why I can conclude this.
1.) I can access Philz recovery but ONLY when forcing the phone to hard reset via buttons.
2.) The touchscreen works in the recovery when resetting but doesn't go to the main menu or anything to restore a backup.
3.) The phone will recognize adb commands from the computer, but since the touches don't work when booted I cannot select the "allow this computer" prompt.
4.) The phone boots into the CM11 ROM and the buttons work (I can change volume, take screenshots, and access power menu.)
So, I'll explain what happened. I tested a boot.img for Quarx and flashed it. I didn't reboot my phone, just let it stay on. It worked and everything, but a little bit after church it rebooted on me and showed the CM setup menu. I was like, "What? Okay..." So I was going trying to make it work, but I realized the touchscreen wouldn't respond to my touches. I locked/unlocked the screen, rebooted, all that good stuff, and none of it worked. So, here's the damage done.
1.) I can't touch anything on the screen. It won't respond to touches.
2.) I cannot access recovery, only hard reset.
3.) I cannot approve adb commands because I need to hit "allow" on the screen. (The prompt does come up though)
So, I have a phone that boots, responds to hardware actions, and can recognize adb commands, but won't accept them unless I say "allow." I can access recovery but only when factory resetting through holding Power + VOL DOWN when booting. The touchscreen works in recovery, but it won't do any actions (back, home, etc.) because it's resetting. After resetting it boots instantly, and voila, my problem remains.
So in short, I need a way to bypass that "authentication" for adb, because in order for fastboot to recognize my device I need to run adb commands to set it up (since that's gone too now). That, or, I need to find a way to access Philz recovery without having to use the touchscreen. It's so frustrating because the one button I need to press is literally right in front of my face, on my screen, but it won't respond to my input.
Does anybody here have any suggestions? I haven't been able to flash a KDZ successfully, I don't know why. It never works for me on this phone. I was a pro at it on the L9. School begins in a week and I need to have a phone that works, for transportation and such. I'm not really at a point to buy a phone right now either since I'm focusing on buying my first car (yay I guess).
If anyone can help I'd really appreciate it. In fact, I'm even willing to donate money to whomever can point me in the right direction.
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Click to collapse
I hate to say it but Factory Reset appears to be your only option for a fix.

Maybe this is a long shot but check out this thread

shinobisoft said:
I hate to say it but Factory Reset appears to be your only option for a fix.
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Click to collapse
Reset doesn't fix it because the boot.img is still the messed up one.
shinobisoft said:
Maybe this is a long shot but check out this thread
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Click to collapse
I cannot enable USB debugging to use that since the screen doesn't work and it reset itself.

gdjindal said:
http://forum.xda-developers.com/lg-l90/general/guide-flash-stock-kdz-offline-lg-l90-t2803479
follow this guide and reflash KDZ
Click to expand...
Click to collapse
I've tried that but it doesn't work for me. I need someone that can do it for me or something, because the KDZs never flash

@Ilxaot
are able to use philz??? fully...means is touch working on philz???
if yes then
you can put aroma file manager there...and in root of it in default.prop
change the lines
ro.adb.secure=1
ro.secure=1
to
ro.adb.secure=0
ro.secure=0
and reboot
now you have adb access without any confirmation required....
this is possible only if philz is working...
best luck...
and remove every possible LG driver from your pc
then reboot
connect to the internet
dont install drivers manually
let windows find the drivers if it doesnt find one.
then just reboot
after rebooting install drivers manually.
this works form me everytime.

k2wl said:
@Ilxaot
are able to use philz??? fully...means is touch working on philz???
if yes then
you can put aroma file manager there...and in root of it in default.prop
change the lines
ro.adb.secure=1
ro.secure=1
to
ro.adb.secure=0
ro.secure=0
and reboot
now you have adb access without any confirmation required....
this is possible only if philz is working...
best luck...
and remove every possible LG driver from your pc
then reboot
connect to the internet
dont install drivers manually
let windows find the drivers if it doesnt find one.
then just reboot
after rebooting install drivers manually.
this works form me everytime.
Click to expand...
Click to collapse
The only way I can boot into Philz is when it's factory resetting. When it's resetting, it shows the recovery and everything, but it's just resetting. There are no options to flash anything and such. It just resets and reboots.
EDIT - If I could get a KDZ to flash, I'd be set. When I connect my phone in laf mode (s/w mode) my computer doesn't recognize it. It says it's an unknown USB device, and shows a warning symbol next to it in the device manager. If I could get that fixed, I might be able to flash!

The recovery you use was not ok
Its gave me same problem when i try it,thank God i can enter download mode to flash KDZ and back to TWRP.
But what that is amazing me about your is that its cant do what other D415 does why? did your own D415 is special.
Also another thing is USB debugging,If you using CM11 by Quartz it was enable by default in that rom

4peace1 said:
The recovery you use was not ok
Its gave me same problem when i try it,thank God i can enter download mode to flash KDZ and back to TWRP.
But what that is amazing me about your is that its cant do what other D415 does why? did your own D415 is special.
Also another thing is USB debugging,If you using CM11 by Quartz it was enable by default in that rom
Click to expand...
Click to collapse
Yes but I still need to accept the prompt asking if I want to allow the computer to access the phone, which I cannot do because the screen does not respond.
How did you manage to flash the KDZ? I know it will be fixed if I can flash it, but I'm not having any luck flashing it! It keeps saying that the device is unknown, even though I've installed and uninstalled the drivers countless times.

Ilxaot said:
Yes but I still need to accept the prompt asking if I want to allow the computer to access the phone, which I cannot do because the screen does not respond.
How did you manage to flash the KDZ? I know it will be fixed if I can flash it, but I'm not having any luck flashing it! It keeps saying that the device is unknown, even though I've installed and uninstalled the drivers countless times.
Click to expand...
Click to collapse
I used this file here http://forum.xda-developers.com/lg-l90/general/guide-flash-stock-kdz-offline-lg-l90-t2803479
I entered download mode by remove my battery,unplug cable,
Then insert the battery back and press volume up key(hold it ),then insert the usb cable
after seen download headline then press power key it will take you to firmware update

4peace1 said:
I used this file here http://forum.xda-developers.com/lg-l90/general/guide-flash-stock-kdz-offline-lg-l90-t2803479
I entered download mode by remove my battery,unplug cable,
Then insert the battery back and press volume up key(hold it ),then insert the usb cable
after seen download headline then press power key it will take you to firmware update
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Click to collapse
I tried that guide last night. The LG tool just has a bunch of question marks instead of text, is that normal?

Ilxaot said:
I tried that guide last night. The LG tool just has a bunch of question marks instead of text, is that normal?
Click to expand...
Click to collapse
yes

4peace1 said:
yes
Click to expand...
Click to collapse
Okay, I'll keep trying. When you booted into download mode, did your computer say the USB device was unknown?

Ilxaot said:
Okay, I'll keep trying. When you booted into download mode, did your computer say the USB device was unknown?
Click to expand...
Click to collapse
nope may you need to change the cable or try another port

4peace1 said:
nope may you need to change the cable or try another port
Click to expand...
Click to collapse
Can you give me the link to the kdz you used? I feel that's the problem. It gets stuck at 2%, and another user said he changed KDZs and it worked fine. I got my computer to recognize it, now I just need it to flash it lol.. It's really depressing how something as incredibly stupid as a KDZ flash is holding me back, and nobody's suggestions seem to be working. About to just give up and not even care about mobiles anymore >.<

http://csmgdl.lgmobile.com/dn/downloader.dev?fileKey=FW015106432109876543213/D41010c_00.kdz
this is a kdz for d410 indian variant.
i dont know your model no.

k2wl said:
http://csmgdl.lgmobile.com/dn/downloader.dev?fileKey=FW015106432109876543213/D41010c_00.kdz
this is a kdz for d410 indian variant.
i dont know your model no.
Click to expand...
Click to collapse
I actually just fixed it as you responded! Thanks mate!

you are welcome...so what about a nice unbricking guide from your experiences????
i think others will contribute so that we can make a good unbricking thread for l90...

k2wl said:
you are welcome...so what about a nice unbriking guide from your experiences????
i think others will contribute so that we can make a good unbricking thread for l90...
Click to expand...
Click to collapse
The guide that I followed was the one about flashing KDZs in thy general section. The problem I had was that my KDZ that I downloaded was corrupt somehow, so I had to find a working one!!