Database Develop

[Q] Help- Need help to root lg optimus black v20E

hi guys im running on gingerbread 2.3.4 V20E and i cant root my device. iv tried unlock root, gingerbreak superone click but doesn't work. also i gave tried blackjack v1.2 but i didnt get proper root access. HELP! thanks for reading!

ashvinfroyo said:
hi guys im running on gingerbread 2.3.4 V20E and i cant root my device. iv tried unlock root, gingerbreak superone click but doesn't work. also i gave tried blackjack v1.2 but i didnt get proper root access. HELP! thanks for reading!
Click to expand...
Click to collapse
No exploit will work... LG fixed that.. damn lg
Anyways why did not you search before, there are a no of threads regarding rooting.
Use cwm injection method and flash your rom again. http://forum.xda-developers.com/showthread.php?t=1512203
By the way you should try other custom roms here as well rather than stock.
A future reference and best rooting technique http://tinyurl.com/6t9vm27:thumbup:
Sent from my LG-P970 using XDA

First of all, since you're new to this board please read the Welcome To The LG Optimus Black Section..... (Please Read If You're New)
Also, read the [HOW TO]The Big N00B how-to! since it will answer most of your questions.
Second, if you would have searched you would have found your answer already, but i'll help you (i'm in a good mood today too ).
You can find an already rooted v20E firmware HERE.
Just follow the steps from THIS post but instead of using the V20B firmware files use the ones from the V20E firmware (i've already given the link to the V20E above).
Good luck and happy modding

Can't wipe data/factory reset
hello i just flashed my optimus black with smartflash as instructed i boot into recovery but however when i select wipe data there is no "yes" option to select i can only select no! HELP

Are you on cwm touch??? If you are, then yes option will be below the no. Scroll down with your volume rocker...
Sent from my LG-P970 using XDA

wow it worked!
thanks man it worked! many thanks!

ashvinfroyo said:
thanks man it worked! many thanks!
Click to expand...
Click to collapse
You are welcome ... by the way touch scrolling is also available... :-D
Sent from my LG-P970 using XDA

Smartflashtool has stopped working
Hi, my OB also has v20E firmware installed by default. I 've tried to root the phone by using smartflashtool method that has already been described above. However, whenever I tried to root my device, it always ended up in failures. The smartflashtool program either showed "Timeout error is occurred" (sometimes) up or "Smartflashtool MFC has stopped working" (most of the times) at various points in the rooting progress
I used all of the programs mentioned on the posts above but still no luck
- Installed LGSmartPhone_ModemlinkDUNDrive_WHQL_ML_Ver_1.0
- Installed LGWindowsMobile_USBDriver_WHQL_ML_Ver_1.0
- Installed LGUnitedMobileDriver_S4981MAN36AP22_ML_WHQL_Ver_3.6
- [patched]V20E_SEA.bin
- V20e_SEA.fls
And currently, my phone cannot boot into the main phone screen (it can only display LG logo at best). Please help!

b3aver said:
Hi, my OB also has v20E firmware installed by default. I 've tried to root the phone by using smartflashtool method that has already been described above. However, whenever I tried to root my device, it always ended up in failures. The smartflashtool program either showed "Timeout error is occurred" (sometimes) up or "Smartflashtool MFC has stopped working" (most of the times) at various points in the rooting progress
I used all of the programs mentioned on the posts above but still no luck
- Installed LGSmartPhone_ModemlinkDUNDrive_WHQL_ML_Ver_1.0
- Installed LGWindowsMobile_USBDriver_WHQL_ML_Ver_1.0
- Installed LGUnitedMobileDriver_S4981MAN36AP22_ML_WHQL_Ver_3.6
- [patched]V20E_SEA.bin
- V20e_SEA.fls
And currently, my phone cannot boot into the main phone screen (it can only display LG logo at best). Please help!
Click to expand...
Click to collapse
hi,
sure, you haven't root your device !
phone will reboot recovery
13. Wipe all data/factiry reset
14. flash Superuser.zip " for root device
15. Reboot system now
superuser.zip download : http://www.mediafire.com/?a1re78800owv3aj Flash with cmw touch in recovery
run smartflashtool with rights administrator also...
use this patched rom => http://forum.xda-developers.com/showpost.php?p=23833005&postcount=186

YkZ_1967 said:
hi,
sure, you haven't root your device !
phone will reboot recovery
13. Wipe all data/factiry reset
14. flash Superuser.zip " for root device
15. Reboot system now
Hi, thanks for your reply. Unfortunately, I haven't gotten to the point where the phone was rooted successfully (100%), whenever I tried to run B_SmartFlashTool_Extern.exe, it always ended up in error. What did I do wrong? I've used the appropriate files and installer, haven't I? Now, I'm totally freaked out because my phone has run out of battery and doesn't show any sign of charging even though I've connected the charger
Oh by the way, I've already used the patch rom for V20e, but still no avail and already tried running the program with admin rights
Click to expand...
Click to collapse

are you able to enter in S/W update mode now ?
key volume + and usb plugged
or use r&dtt method => http://forum.xda-developers.com/showthread.php?t=1111771

Ok, I'm totally freaked out now. I can't even start the S/W update mode anymore although I've been charging the phone for about 15 minutes. No, I don't know how to use r&dtt method, tried to read the post but I don't which one is r&dtt method. Can you help me? I've checked the charger and it felt warm after 15 minutes of charging though

b3aver said:
Ok, I'm totally freaked out now. I can't even start the S/W update mode anymore although I've been charging the phone for about 15 minutes. No, I don't know how to use r&dtt method, tried to read the post but I don't which one is r&dtt method. Can you help me? I've checked the charger and it felt warm after 15 minutes of charging though
Click to expand...
Click to collapse
remove the battery and leave five minutes without
phone must be on power off
plug usb cable and press volume keys+
say me if the phone can be enter in S/W update mode, i' m watching for LGFlashTool.exe, never used again, always unbrick my Ob with smartflash tools method

Question about root
Hi, I just root rights to V20O not only to root recovery, how to do it. Recovery mode without dissolving it.

(Q) downgrade from v30 to v20

Is it possible to make a downgrade to my rom só i can restart to use new cm nightlies
Greetings
Sent from my LG-P990 using Tapatalk 2

I Think i found the awnser, i Will use smartflash (mainly this was my doubt. I didn't Know if This would damage the Phone)
Sent from my LG-P990 using Tapatalk 2

rolling_stone said:
I Think i found the awnser, i Will use smartflash (mainly this was my doubt. I didn't Know if This would damage the Phone)
Sent from my LG-P990 using Tapatalk 2
Click to expand...
Click to collapse
I dont think you can just downgrade with smartflash tools. V30 has a locked ICS bootloader if im correct and apparently my O2X bootlooped when i did that. Now i stuck and even NVFLASH fails

i downgraded my v28g to v20s with smartflash

Thats the answer....
Use Nvflash i downgraded many times from v28a,g,v30a down to v20 or cyanogen mod Its the savest way.
Im form germany... only found the german forum but the zips of nvflash work very well use it:
http://www.handy-faq.de/forum/lg_op...timus_speed_p990_original_rom_2x_flashen.html

DarkFantasy6 said:
Thats the answer....
Use Nvflash i downgraded many times from v28a,g,v30a down to v20 or cyanogen mod Its the savest way.
Im form germany... only found the german forum but the zips of nvflash work very well use it:
http://www.handy-faq.de/forum/lg_op...timus_speed_p990_original_rom_2x_flashen.html
Click to expand...
Click to collapse
I think it might be time for me to throw away my P990 because im not sure if the VOL UP button actually works or is it the PC problem.
---------- Post added at 07:24 PM ---------- Previous post was at 07:05 PM ----------
max21ns said:
i downgraded my v28g to v20s with smartflash
Click to expand...
Click to collapse
Anyway although I doubt smartflash could work for my case, I decided to give it try and flash V20B rom (starhub) via the .fls and .bin files method. It gave me an error when it was about to partition the "7 partitions". So i exited and unplug my phone as the SW upgrade screen on my phone turned to a blank screen. I wanted to try again and plug back holding the VOL DOWN button to enter SW mode. I heard the Windows sound notification (when a device is plugged or unplugged) as i do so but the screen was still blank. So i checked the device manager screen and saw that i entered the NVFLASH recovery mode.
Im confused as to how it would work now but anyway i was grateful to your post and that made me give smartflash a try still. :laugh::good:

the easiest way in your situation is using this [TOOL] Full Brick Repair (Clean & Easy)
It's nvflashable and already includes a CM10 nightly. Boot it up and upgrade CM10 with the built in upgrader. That's what I did yesterday. Then boot into recovery and flash gapps.

agent6 said:
Anyway although I doubt smartflash could work for my case, I decided to give it try and flash V20B rom (starhub) via the .fls and .bin files method. It gave me an error when it was about to partition the "7 partitions". So i exited and unplug my phone as the SW upgrade screen on my phone turned to a blank screen. I wanted to try again and plug back holding the VOL DOWN button to enter SW mode. I heard the Windows sound notification (when a device is plugged or unplugged) as i do so but the screen was still blank. So i checked the device manager screen and saw that i entered the NVFLASH recovery mode.
Im confused as to how it would work now but anyway i was grateful to your post and that made me give smartflash a try still. :laugh::good:
Click to expand...
Click to collapse
I had the same problem, and I leave the battery in the phone and it worked, try it

well
after reading some information, i solved my question using this thread
http://forum.xda-developers.com/showthread.php?t=1715272
thank you all guys that tried to help me.

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!

[SOLVED] - i think swapper bricked My O4X, please help,

hi last night i installed swapper from market and ran it. afterward when i restarted my phone, it got stuck on LG logo. i waited even half hour but it doesn't go any further.
condition is that i can't access adb at lg logo screen, but i can have adb on flashing mod which comes when you press power button + vol up .
secondly it doesn't detect my internal sdcard in default recovery. when i try to access sdcard from adb by cd sdcard, it doesn't go in sdcard. when i try to flash another update.zip from ext-sdcard from default recovery, it says unknown volume for path [/sdcard].
so did swapper deleted my internal sdcard partition or what did it do? what is the solution? i tried to find swapper app from adb, went through folders to folder but i couldn't find it out. may be if i can find it from adb and remove it and also it's created file from sdcard my phone come back to life?
in the last my phone is in warranty. atleast someone show me a way to completely remove rooting from my phone through adb so i can take my phone to their customer center.
i also have lg pc suite and mobile support tool.
i had root access with supersu and i installed cwm recovery in my phone. but since phone is not starting up, i can't go into cwm recovery, i can only go in the default recovery.
please help

Re: i think swapper bricked My O4X, please help,
You tried to flash your version with kdz?
Maybe you don't need to do a clean install and keep your files and apps.
Sent from my LG-P880 using xda app-developers app

RuedasLocas said:
You tried to flash your version with kdz?
Maybe you don't need to do a clean install and keep your files and apps.
Sent from my LG-P880 using xda app-developers app
Click to expand...
Click to collapse
what mean by kdz?
i just want my phone back in any cost, even if all data is lost, please

Re: i think swapper bricked My O4X, please help,
Mr.LOVER said:
what mean by kdz?
i just want my phone back in any cost, even if all data is lost, please
Click to expand...
Click to collapse
In that case use LGFlash Tool. Follow the tutorial "how to roll back..." in the 7th post you have the links for all needed files.
Sent from my LG-P880 using xda app-developers app

RuedasLocas said:
In that case use LGFlash Tool. Follow the tutorial "how to roll back..." in the 7th post you have the links for all needed files.
Sent from my LG-P880 using xda app-developers app
Click to expand...
Click to collapse
7th post? which thread's 7th post? can you give link?
till that i'm gonna find.
by the way i used lg support tool , menu recovery firmware. and it downloaded 472mb file and then started extracting it and then started updating... but stoped at 4% forever.
where should i put my phone? i mean it can't boot into OS, should i go in default recovery and connect to lg tool or flashing mod?

RuedasLocas said:
In that case use LGFlash Tool. Follow the tutorial "how to roll back..." in the 7th post you have the links for all needed files.
Sent from my LG-P880 using xda app-developers app
Click to expand...
Click to collapse
bro its ****in up my mind. there are a lot of things on internet, lots of guides, on xda forums there is a post i saw http://forum.xda-developers.com/showthread.php?t=2069723
this post is a tutorial to flash kdz, but i don't know what is my current firmware version, if its 20x or 10x. and how can i see that? coz he says don't downgrade from 20x to 10x with this tool, and i don't know if my is 20x may be? and i might make my problem more complicated by doing wrong things.
please guide me with right path. i'm in trouble and i'm not very experienced in these stuff, i just wanna know things i don't know like i don't know which version of kdz i should download from his link, my country is pakistan and it is not in list of countries over there, and there is european open kdz which is 10a 10b etc. which is for me? your signature says you have 20x, i don't see any 20x over there?
i repeat my situation again.
installed swapper
restarted phone
stuck on LG logo
restarted again n again, no luck
tried adb commands to remove swapper package but can't find sdcard in my root.
tried default recovery, wipe data, wipe cache, restarted, no luck
copied a custonexus rom on my ext-sd, renamed it to update.zip, went to default recovery, tried install update from ext-sd, it gives error "unknown volume for path [/sdcard]"
tried to push update.zip to cache "adb push update.zip /cache", it gives error "permission denied" file system read only.
tried to do these things by connecting my phone to pc while phone is in recovery by removing batteries and inserting, Vol down + power long hold, no luck
tried to do these things while in strange mode lol, removing batteries and inserting, vol up + power long hold. no luck
tried LG support tools, menu > customer support > recovery phone while in strange mode lol vol up + power long hold, it downloads, extracts, and on process of updating it gets stuck on 4%, waited half hour, but no luck
tried the above while going in recovery mode on phone and same options above, but it doesn't connect device.
tried to power on and on LG Logo, same did same above but no luck.
tried to go in S/W mode and do the same above, but it says communication problem, remove batteries and insert and restart update.
now thats all i could do and i know at the moment to do. flashing kdz is new thing for me, im gonna try it but i'm not sure where to start. where to download my kdz and which are right kdz for me.
this is where i need your help. please spare me some time and just tell me and think about what could i do now,
why my phone is stuck on lg logo even internal sdcard is not available, i don't know if it's unmounted by swapper, deleted or formated or partition removed. i can't use adb commands to push coz it's read only, I'm stuck
i can't even take my phone to warranty center coz it's rooted, it has root files in it which will show them it was rooted and warranty will void , even if i delete root files, how can i convince them what did i do with my phone that it's system files are touched and they can't be touched without being rooted.
STUCK NEED HELP
oh yea, one more thing to mention, i recently updated busybox and installed it as smart install, and never rebooted my phone after it, until this time.

dude, just do what Ruedalocas said
go to this thread:
http://forum.xda-developers.com/showthread.php?t=2179126
and in the seventh post is RuedasLocas tutorial, just follow it. There is even a youtube tutorial.

finally I got my phone back now
thank you very much for taking interest in helping me.
for those with similiar problems,
i went to this guide http://forum.xda-developers.com/showthread.php?t=2069723
and followed instructions,
downloaded european open v10h kdz version and flashed it as instructions. and thats all,

thanks a million
i just got through the instruction and gosh i got my lg 4x hd
thanks a million for the developer
Mr.LOVER said:
finally I got my phone back now
thank you very much for taking interest in helping me.
for those with similiar problems,
i went to this guide http://forum.xda-developers.com/showthread.php?t=2069723
and followed instructions,
downloaded european open v10h kdz version and flashed it as instructions. and thats all,
Click to expand...
Click to collapse

[Q] Did I BRICK mine? :( Please help me resurrect it from the dead!

Hi there,
First things first I'm a big noob when it comes to tweaking/flashing/anything with a phone; and life just confirmed it.
All I wanted was to make pics without shutter sound, to capture powerpoint screens in college instead of having to write ten sentences in 10 seconds. I couldnt just turn the shutter sound off! After some reading I thought I needed to both get my P880 rooted and needed CWM Recovery; I managed to do everything exactly as stated here:
Rooting:
http://theunlockr.com/2013/01/14/how-to-root-the-lg-optimus-4x-hd/
Installation of CWM Recovery:
http://theunlockr.com/2013/01/14/how-to-install-clockworkmod-recovery-on-the-lg-optimus-4x-hd/
After that I tried to install this rom via CWM Recovery -> install from SD/zip file -> CWM_deodex_rom_v10e_signed.zip
http://forum.xda-developers.com/showthread.php?t=1871858
I did that because this mod had the camera mod I wanted installed already.. The installation went fine, the phone stated.
But when I hit reboot, it got stuck in bootloop.. All I can do now is press PWR + Vol down (read that after some googling) and enter 'Android system recovery <3e>'.
It shows this list of options (above a picture of a dying android with a red exclamation mark on top of it)
reboot system now (done that few times now, gets stuck in bootloop everytime.. Well I think it's that. It gets stuck at the LG screen, it's my interpretation that that is the correct use of the word bootloop)
apply update from external storage (well please dear lord let there be an escape through this option)
wipe data/factory reset (no results after hard resetting, still bootloop)
wipe cache partition (did this too)
apply update from cache (not this, why whould I)
wipe nv partition (did this too)
Toggle Console VART Log (and well, I don't think this option's going to save me)
I wanted an option to turn off the shutter sound. Well, things changed. Right now I'm willing to do anything to get the phone back to life! Google couldn't really help me out.. Well better stated: I can't help myself out using google, so I'm asking for your help! Please all XDA tweakers, modders, hackers, etc. unite and help! It is appreciated A LOT! Please state what I need to do now, I just want to get it back to a working state. Or please confirm that it is not completely BRICKED ;x
edit: I followed some advice from the unbrick-thread http://forum.xda-developers.com/showthread.php?t=1843830
Now I'm stuck @ S/W Upgrade - Please wait while upgrading ... screen. Please help me out
edit 2: What I'm doing now.. via the LG PC Suite -> Lg Mobile Support Tool -> Recovery (you need to fill in either IMEI or S/N and model)
Status: Downloading the LG Mobile Phone Software Update program. Est time left: 44:40 for 400mb.. Nice server

Re-flash using LGFlash Tool.
Use compatible .dll depending if its v10x or v20a.
Search a little, there's a lot of info about that

Wait, my stock v10c's camera already had the function to mute the shutter sound. Why did you need to do anything else?

RuedasLocas said:
Re-flash using LGFlash Tool.
Use compatible .dll depending if its v10x or v20a.
Search a little, there's a lot of info about that
Click to expand...
Click to collapse
I managed to get my hands on the latest version of LGNPST - I suppose that's what you mean with LGFlash Tool.
But how do I know if the phone is v10x or v20a.. ? I think all methods to look that up are blocked, since Im in bootloop with only android system recovery <3e>
Thanks!
nvm: just found this thread http://forum.xda-developers.com/showthread.php?t=1861854, found out that you are an awesome guy!
just flashed to v20a, she's back alive

japzz said:
I managed to get my hands on the latest version of LGNPST - I suppose that's what you mean with LGFlash Tool.
But how do I know if the phone is v10x or v20a.. ? I think all methods to look that up are blocked, since Im in bootloop with only android system recovery <3e>
Thanks!
nvm: just found this thread http://forum.xda-developers.com/showthread.php?t=1861854, found out that you are an awesome guy!
just flashed to v20a, she's back alive
Click to expand...
Click to collapse
and congrats for you got your option to silently take pics after all

Haha yeah lulz, thanks!