I have half-bricked P880. Bought just a week ago.
My ROM is stock V10C. I’m trying to get rid of that crap ROM, but so far without success.
I have rooted the phone but flashify is the only app saing that the phone is not rooted. Every other app which requires root is normally working. I can’t unlock the bootloader because phone can’t be recognized by any computer, using different Windows, USB cables etc. It just shows charging but PC doesn’t see any connected device. Nor the phone shows any connection option when I connect it to PC by USB.
I’ve tried to install TWRP (without success) and CWM (successfully) but the phone can’t be load into bootloader. Just an LG logo will appear and this error message:
[LGE_SECURITY ERROR] boot image signature
Critical failure: Unable to start kernel
Unrecoverable bootloader error (0x00000002)
I think it’s still locked.
This method hasn’t help either…
http://forum.xda-developers.com/showthread.php?t=2251407
What’s more, the error message appears almost every time I try to turn on the phone. Sometimes it takes 10 attempts until the phone will finally boot into Android.
Yes I’ve tried basic things like playing with USB debug mode, LG PC suite option/USB tethering… please don’t respond to my question by that kind of suggestions, I’m no rookie in flashing roms and Android problems.
Only hope for me is to flash kdz file via PC (when the phone is off and battery out). BUT I’m unable to do that, due to problem that the phone is again NOT RECOGNIZED by PC. Of course I've tried every kind of LG driver but the problem is in the phone, because the PC won’t even notify by sound that a phone has been connected to it. So I need to change the corrupted bootloader… somehow.
I’ve already searched everything to this issue on XDA and elsewhere - without any solution. So I’m 95% the phone is half-bricked without any chance to flash new ROM.
If none of those things that you said doesnt work, as last resort you should try this
http://forum.xda-developers.com/optimus-4x-hd/general/s-stuck-rescue-ultimate-rescue-guide-t3012444
Thank you for a quick reply! However the autor of the method says:
i mean when you get stucked with S/W screen, and you can't flash the device in any way
Click to expand...
Click to collapse
In my case I can't say that I'm stuck with S/W screen. Because I don't even get in there. Any PC in my home (XP/Windows 7) don't even recognize that a mobile has been connected to it. So there is no S/W screen. The only way I can get in S/W screen is to keep the battery in, but it doesn't solve anything. Because the phone remains unrecognized to PC. Therefore I'm unable to flash anything. A simple explanation in here arose: the USB port in my phone is faulty. BUT, how that can be, when the USB charging works fine and even S/W screen appears while the battery is in?
Either way I'll keep your suggestion as the final solution(since I'm very skeptical of it and also dont have screwdriver small enought to take out those tine srews) if there will be no other responce to my problem.
I'm not very experienced in things like this, but when I was flashing kdz to my phone, my computer wasn't able to recognize the phone with battery out, so I did whole process with battery in (and it worked)
anyway if you want to unlock the bootloader you have to update to official JB (just flash JB kdz and then wipe data in LG recovery to prevent bootloop)
so first you have to connect somehow your phone in sw mode to computer
then flash JB kdz and wipe data in LG recovery (it should be back even if you've flashed twrp)
and finally root JB and unlock bootloader (for example this way I found by two clicks here at xda, just browse Optimus 4x general category: http://forum.xda-developers.com/showthread.php?t=2251407 )
I hope I helped you a bit
I agree with you SuperLamic. Especially with this:
so first you have to connect somehow your phone in sw mode to computer
Click to expand...
Click to collapse
My only hope is to flash kdz file using fastboot mode. However after days of searching on XDA, installing all kinds of drivers, trying different methods etc., I'm still unable to connect my phone to PC.
Any PC I tryied so far haven't even made a sound while pluging my LG to it. Nor it's vissible in the list of connected USB devices.
So now I'm sure that a USB port on my phone is faulty There is no other possible explanation. But thank you all for your suggestions anyway.
P.S.
There is maybe a tiny chance for workaround by unlocking the bootloader without PC. But this method doesn't work. http://forum.xda-developers.com/showthread.php?t=2251407 With unlocked bootloader I woud be able to solve the problem without PC. Right now I can't install TWRP nor CWM because they require bootloader to be unlocked. CWM in ROM Manager always says that installation was successful but actualy, it wasn't. Since there is always this error when I try to load recowery mod...
[LGE_SECURITY ERROR] boot image signature
Critical failure: Unable to start kernel
Unrecoverable bootloader error (0x00000002)
EDIT:
So I find out that only JB ROMs can be unlocked. It's not possible with my stock ICS. So there is really only one solution: repair my USB port on LG to flash kdz. But I'm afraid that these days a repair will cost more than the phone itself :[
Related
Like the title says:
I just tried to upgrade my Optimus 2X via PC software. The package downloaded fine but in the middle of the upgrade process the PC software crashed(!) and now I have a phone which is stuck in the upgrade boot screen saying:
"S/W Upgrade
Please wait while upgrading..."
So, what now? Any way to get this thing working again?
First, remove your battery and put it in your phone. Boot the phone up and see where it goes. If it goes into S/W mode again, that sucks. If it goes to the LG boot screen, put the battery out again and put it in. Press Power + Volume Down buttom to go into the CWM menu. From there you can restore your backup (if you made one) or mount the SD card and put the (rom).zip file in your SD card. Then just flash the zip from the CWM.
The update process by LG is pathetic. Many a times, I had the same problem as you. It would just get stuck. It is because of faulty drivers on their part, unable to maintain a connection with the phone.
You can try to NVflash clockwork mod recovery (CWM) and then recover your data.
i have the same problem.
i've tried everything without luck.
mine stopes att 4 procent and pc is trying to install some new device
lge mobile composite usb device.
there is no way to work around this issue.
i have tried absolutly everything.
wipe, clean, drivers this that. hard reset, variations in installing, i don't know what else i can do,
this is the message that cousing all of this.
this is located just in upgrade mode
the device is called
LGE mobile composite usb device
Universal Serial Bus controllers
LG Electronics Inc.
Location : Port_#0001.Hub_#0004
Windows cannot verify the digital signature for the drivers required for this device. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source. (Code 52)
Thanks for the infos. I managed to install a stock rom and baseband with SmartFlash yesterday. Just a few minutes ago I used LG's update tool to update the phone to Gingerbread.
So, problem solved. If anyone has the same problem, follow these instructions to update the baseband:
http://android.modaco.com/topic/335494-12-aug-smartflash-stock-baseband-release-103521-20110725/
You can get stock roms from here:
http://forum.xda-developers.com/showthread.php?t=1035041
Hello,
i was trying to unlock my bootloader...i tried everything... my lg is euro-xxx
after a hundred attempts there was an error message every time i tried to boot from the bootloader ; [security error] boot image signature..
i tried to fix it flashing the original bootloader from the ''all in one tool''.. nothing happened.. and because i am a stupid noob i thought that a factory reset might re-wright this and restore it to its previous state... and guess what.. it didn't! and now my phone is dead. Even when i connect it via usb (it doesn't matter if it is the wall charger or the pc) the phone keeps looping to that error message....
please help me, i am desperate....:crying:
just after the first post there was a very fortunate turn of events!!!...at least that's what i think... when i connected my phone to the pc the loop in the bootloader stopped and there is a charging indicator instead.. is there anyone who can tell me if there is a way to fix my poor lg? i only have it for a week.......
if it is triing to update it can loop, try to remove the battery
What did you do to unlock your bootloader?
pandar3 said:
Hello,
i was trying to unlock my bootloader...i tried everything... my lg is euro-xxx
after a hundred attempts there was an error message every time i tried to boot from the bootloader ; [security error] boot image signature..
i tried to fix it flashing the original bootloader from the ''all in one tool''.. nothing happened.. and because i am a stupid noob i thought that a factory reset might re-wright this and restore it to its previous state... and guess what.. it didn't! and now my phone is dead. Even when i connect it via usb (it doesn't matter if it is the wall charger or the pc) the phone keeps looping to that error message....
please help me, i am desperate....:crying:
Click to expand...
Click to collapse
Did you root your phone first?
The same problem happened to me when i tried unlocking the bootloader however i just kept on restarting my device and it worked for me; try to turn on the phone by only using the charger. Also keep tapping the power button while the phone is turning on (try everything, i dont know if it will work for you but it just worked for me).
If you manged to turn on your phone use the LG PC Suite to do an Emergency recovery, this will reset your phone. Then i unlocked the boot loader first before rooting the phone use cmd instead of the all in one program.
there are yt videos on how to do this but i am a new user iam not able to post them
help
someone please help me, i was actualizano my lg 4x through lg mobile support tool gave me an error and now enceindo not in any way if sw or anything only when I connect it to my pc recognizes it as apx device. please help.racke
I rooted my phone but forgot to unlock the bootloader, and now my LG is in a bootloop.
I can access S/W mode but not recovery mode (android with the triangle), the main problem is that my computer will not detect my phone when it is in (windows 7 is what im using). I tried other cables, computers and even ubuntu, same result the phone will charge but it is not detected.
I looked in device manager and there is no hint of it there.
And when I try to flash the KDZ, I get the message "No device found"
Please help.
levenirv said:
I rooted my phone but forgot to unlock the bootloader, and now my LG is in a bootloop.
I can access S/W mode but not recovery mode (android with the triangle), the main problem is that my computer will not detect my phone when it is in (windows 7 is what im using). I tried other cables, computers and even ubuntu, same result the phone will charge but it is not detected.
I looked in device manager and there is no hint of it there.
And when I try to flash the KDZ, I get the message "No device found"
Please help.
Click to expand...
Click to collapse
How many times do people need to ask the same basic questions because they are too lazy to search first?
EVERYTHING you need to know has been said many times, so please use the clever little search function and start reading. :good:
bootloader and root - not related
root and recovery - not related
s/w mode and recovery - not related
adb and phone drivers - extremely related, not even mentioned
I-phone is usually the answer in these cases, but tonight I'm feeling generous so I'll give away some free knowledge:
- bootloader: Where the "code" that controls all of your specific hw resides (aka kernel) also sometimes referred to as "bl"
- root: The ability of taking control of "administration priviliges" or "run as administrator" to make a comparison with windows
- recovery: It's a gui for a set of basic commands which lives inside the bootloader, so no unlock - no custom recovery
- custom recovery: two choices, twrp or cwm, they replace the crappy and useless stock lg recovery - Requirement: unlocked bootloader
- software mode: something apparently lot of people focus on but you'll actually need at most twice in your lifetime before you change phone
Rooted LG D405n, nothing done to the software beyond that (unless you count having zooper/nova launcher configured on it). Gave the phone to a friend for a short while and she decided to update the software using the LG software update on the phone. After she selected install on the latest update which came out not long ago and was supposedly going to update the apps, it restarted and got stuck on boot screen with Boot Ceritification Error [560].
I've tried this guide http://forum.xda-developers.com/lg-l90/general/guide-flash-stock-kdz-offline-lg-l90-t2803479 but I got stuck on step 4. because I cannot make the PC recognize the device (it does not show up at all), so the LG tool can't install USB drivers. If i try to do it manually (it gives me an option to select a device from a list) it doesn't seem to do anything, just gets stuck on the Downloading USB driver window.
I can put the phone in Firmware Upgrade Mode just fine, but it doesn't seem to do anything useful. The PC still won't recognize the device, however I can hear the 'usb pluged in' sound (I'm on Win7).
Did a factory reset, didn't help.
Asayanami said:
Rooted LG D405n, nothing done to the software beyond that (unless you count having zooper/nova launcher configured on it). Gave the phone to a friend for a short while and she decided to update the software using the LG software update on the phone. After she selected install on the latest update which came out not long ago and was supposedly going to update the apps, it restarted and got stuck on boot screen with Boot Ceritification Error [560].
I've tried this guide http://forum.xda-developers.com/lg-l90/general/guide-flash-stock-kdz-offline-lg-l90-t2803479 but I got stuck on step 4. because I cannot make the PC recognize the device (it does not show up at all), so the LG tool can't install USB drivers. If i try to do it manually (it gives me an option to select a device from a list) it doesn't seem to do anything, just gets stuck on the Downloading USB driver window.
I can put the phone in Firmware Upgrade Mode just fine, but it doesn't seem to do anything useful. The PC still won't recognize the device, however I can hear the 'usb pluged in' sound (I'm on Win7).
Did a factory reset, didn't help.
Click to expand...
Click to collapse
You could try the LG Support Tool. Not sure it will work but it's worth a shot. The problem with the phone not getting detected by the PC is the fact that 1) The OS was upgraded by your friend and 2) The factory reset you performed . Both of those acts would have disabled USB debugging hence no device detected.
I unfortunately have no encouraging information to give you.
shinobisoft said:
You could try the LG Support Tool. Not sure it will work but it's worth a shot. The problem with the phone not getting detected by the PC is the fact that 1) The OS was upgraded by your friend and 2) The factory reset you performed . Both of those acts would have disabled USB debugging hence no device detected.
I unfortunately have no encouraging information to give you.
Click to expand...
Click to collapse
It appears that I have fixed it.
Since The tool would not download the USB drivers by itself I went to the LG website and got them manually, installed them and restarted the PC.
After that I launched the LG Mobile Support Tool, but it still didn't see the device.
However, I clicked Options and Upgrade Recovery. It asked me for my IMEI. I put the phone into Firmware Upgrade mode and the program started upgrading the phone.
After it was all done, the phone restarted, and the software update simply said that instalation failed, I have lost root but everything else seems fine. Rooted again with towelroot and I'm back in game.
Asayanami said:
It appears that I have fixed it.
Since The tool would not download the USB drivers by itself I went to the LG website and got them manually, installed them and restarted the PC.
After that I launched the LG Mobile Support Tool, but it still didn't see the device.
However, I clicked Options and Upgrade Recovery. It asked me for my IMEI. I put the phone into Firmware Upgrade mode and the program started upgrading the phone.
After it was all done, the phone restarted, and the software update simply said that instalation failed, I have lost root but everything else seems fine. Rooted again with towelroot and I'm back in game.
Click to expand...
Click to collapse
Well I'm glad you managed to fix it.
Since this issue appears to be solved, please insert '[SOLVED]', without the quotes, at the beginning of your thread title.
Hello all..
I'm sorry if this is the wrong section, but I can't connect my problem to anything similar..
I've been removing system apps on my phone and, unfortunately I selected Lg Home in a group, and without noticing I deleted it.
I did restart it after it.. and the problems started.
I was able to select the custom Home by LG somehow, but I'm enable to go into settings (getting "Unfortunately, Settings has stopped.")
After that, I noticed that I cannot do really anything on the phone.. my PC no longer recognize my device, usb debugging is disabled.
In addition, I cannot get into fastboot (boot loop, when I'm holding the keys),
I cannot go into recovery too.
I could only get to the LG hard reset page, did reset the phone.. with no success at getting anything back.
I have terminal emulator and SuperSU on my phone (it's rooted).
Is there anything I can do with the terminal? Like send LG drivers to my PC, or restarting in fastboot/recovery?
I even tried to flash the original ROM with LG Flesh Tool.
With that program I cannot get phone information, and when I try to flash I get a message saying that Upgrade stopped due to an error.
It asked me to restart and bla bla.. still same
I did try it from download mode, but my phone did not got recognized on the PC again, so nothing there too.
Whenever I connect the device to the PC, windows is searching for drivers for MTP Usb Driver (and fails everytime). Note: I did have those installed before I messed up the phone.
I have ADB and I'm working with cordova, so I tried to install another andorid on my pc, and it got recognized right away (every driver was installed without doing anything, and I can shell it).
Any advice?
Thanks.
Sorry for spamming..
But, nothing really??