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ROM and ROOT for LG Optimus LTE P936

25th July 2012, 03:58 AM   |  #21  
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Background

1. P936 stock rom cannot be rooted by current methods
2. The only rom that can be rooted is the leaked AT&T ICS rom : forum.xda-developers.com/showthread.php?t=1668476
3. But CWM recovery cannot install successfully on the above rom
4. So you have to flash back to original P936's V10C_00.kdz WHILE keeping the phone rooted
5. Now you can install CWM recovery and flash CM9

I followed the instruction here to get my P936 rooted and install CM9, however the instruction is hard to follow :
bbs.gfan.com/android-4546670-1-1.html

---------- Post added at 10:53 AM ---------- Previous post was at 10:09 AM ----------

Here is a more detailed instruction :

Files you need :
1. keepRoot tool : https :// rapidshare.com/files/192745915/keepRoot.rar
2. kdz flash tool : https :// rapidshare.com/files/688747034/KDZ_Tools.rar
3. P936's stock rom - V10c_00.kdz

Steps:
1. Make sure your phone is P936
2. Power off phone, press volume up and plugin PC cable, to start the download mode
3. Follow forum.xda-developers.com/showthread.php?t=1668476 to flash AT&T ICS rom
4. Follow page 6 of the above post to root your phone using TPSparkyRoot
5. Power off
6. Wipe data/cache (see * below)
7. Turn on usb debug mode, connect as PC software with usb
8. run keepRoot's "before.bat"
9. flash v10c_00.kdz (using kdz flash tool), following instruction at bbs.gfan.com/android-3321012-1-1.html
10. After flashing is finished completely, the phone will reboot and stuck at the 2nd LG logo screen, Do NOT wipe data!
11. While it is stuck at the 2nd logo screen, run keepRoot's after.bat
12. The phone may keep rebooting, just pull the battery
13. Wipe data and cache (see * below)
14. Now you have rooted phone with its stock rom, and you can install CWM recovery 5.8.2.0 and flash CM9

* To Wipe data/cache, disconnect your phone cable, power off, press volume down + power button until you enter the LG recovery mode, when you see the white text to ask you to confirm wipe phone user data and cache, press power button to confirm (twice). Then the phone will reboot and go to a reset screen with progress bar. Wait until that is done and the phone will reboot with factory setting.

---------- Post added at 10:58 AM ---------- Previous post was at 10:53 AM ----------

After flashing CM9, if you want to enable LTE, you need to dial *#*#4636#*#*, then select Phone Info, then select LTE/GSM auto mode.
Last edited by alexw88; 25th July 2012 at 03:19 AM. Reason: more info
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25th July 2012, 12:51 PM   |  #22  
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thanks for the detail, you save my P936!
25th July 2012, 12:57 PM   |  #23  
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Quote:
Originally Posted by alexw88

Background

1. P936 stock rom cannot be rooted by current methods
2. The only rom that can be rooted is the leaked AT&T ICS rom : forum.xda-developers.com/showthread.php?t=1668476
3. But CWM recovery cannot install successfully on the above rom
4. So you have to flash back to original P936's V10C_00.kdz WHILE keeping the phone rooted
5. Now you can install CWM recovery and flash CM9

I followed the instruction here to get my P936 rooted and install CM9, however the instruction is hard to follow :
bbs.gfan.com/android-4546670-1-1.html

---------- Post added at 10:53 AM ---------- Previous post was at 10:09 AM ----------

Here is a more detailed instruction :

Files you need :
1. keepRoot tool : https :// rapidshare.com/files/192745915/keepRoot.rar
2. kdz flash tool : https :// rapidshare.com/files/688747034/KDZ_Tools.rar
3. P936's stock rom - V10c_00.kdz

Steps:
1. Make sure your phone is P936
2. Power off phone, press volume up and plugin PC cable, to start the download mode
3. Follow forum.xda-developers.com/showthread.php?t=1668476 to flash AT&T ICS rom
4. Follow page 6 of the above post to root your phone using TPSparkyRoot
5. Power off
6. Wipe data/cache (see * below)
7. Turn on usb debug mode, connect as PC software with usb
8. run keepRoot's "before.bat"
9. flash v10c_00.kdz (using kdz flash tool), following instruction at bbs.gfan.com/android-3321012-1-1.html
10. After flashing is finished completely, the phone will reboot and stuck at the 2nd LG logo screen, Do NOT wipe data!
11. While it is stuck at the 2nd logo screen, run keepRoot's after.bat
12. The phone may keep rebooting, just pull the battery
13. Wipe data and cache (see * below)
14. Now you have rooted phone with its stock rom, and you can install CWM recovery 5.8.2.0 and flash CM9

* To Wipe data/cache, disconnect your phone cable, power off, press volume down + power button until you enter the LG recovery mode, when you see the white text to ask you to confirm wipe phone user data and cache, press power button to confirm (twice). Then the phone will reboot and go to a reset screen with progress bar. Wait until that is done and the phone will reboot with factory setting.

---------- Post added at 10:58 AM ---------- Previous post was at 10:53 AM ----------

After flashing CM9, if you want to enable LTE, you need to dial *#*#4636#*#*, then select Phone Info, then select LTE/GSM auto mode.

Hi Alex, this is Alex from Hong Kong and I have just got a P936 today. Everything went well until step 9 - flashing the v10c_00.kdz... the KDZ_FW_UPD has force closed... and I have tried a few times, also restarted my computer a few times... still the same. And my phone has been stuck at Download Mode whenever I turn it on. So now I am flashing the leaked ICS again to see if there are any luck... (actually, except it's stuck at 2G signal, I liked the ICS rom pretty much... ><). So what did I do wrong? Thanks and hopefully you could guide me a little bit more into details... thanks!!!

Last but not least, I saw there is a latest 4.0.4 for LU6200 just released... is that suitable for our P936?
25th July 2012, 03:34 PM   |  #24  
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I tried a XP PC and a Win7 64bit PC and both works ok, not sure about Win7 32 bits. May be you can try flashing using another PC?
Or you can try to use other KDZ flash method/program to flash the V10c_00.kdz

If anything goes wrong, just put the phone in download mode and you can at least flash the at&t ics rom, and start again from there.

I never tried the 6200 rom you mentioned, so I am not sure.

Good luck!
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26th July 2012, 06:33 AM   |  #25  
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Quote:
Originally Posted by alexw88

I tried a XP PC and a Win7 64bit PC and both works ok, not sure about Win7 32 bits. May be you can try flashing using another PC?
Or you can try to use other KDZ flash method/program to flash the V10c_00.kdz

If anything goes wrong, just put the phone in download mode and you can at least flash the at&t ics rom, and start again from there.

I never tried the 6200 rom you mentioned, so I am not sure.

Good luck!

Hi Alex... I finally got the 2.3.6 flashed with ROOT... figured out what went wrong! I should have pressed "Read Phone Information" on the lower left corner instead of the HUGE Upgrade button in the middle... hahahaha... now I am flashing the CM9-RC2...

Again, thanks a lot for the tutorial! Cheers! And thanks a lot for the developers!!! I will definitely spend some times to have a more details tutorial for the Chinese forums later on as I also see that quite a lot of people were suffering more or less similar problems I have had.
7th August 2012, 09:06 PM   |  #26  
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Quote:
Originally Posted by alexw88

I tried a XP PC and a Win7 64bit PC and both works ok, not sure about Win7 32 bits. May be you can try flashing using another PC?
Or you can try to use other KDZ flash method/program to flash the V10c_00.kdz

If anything goes wrong, just put the phone in download mode and you can at least flash the at&t ics rom, and start again from there.

I never tried the 6200 rom you mentioned, so I am not sure.

Good luck!

By the way Alex... have been using it since my last reply and everything works great except 2 things... (which are actually quite important for me...)
1. WiFi tethering not working...
2. Occasionally the screen doesn't wake, have to pull off the battery and reboot it. And sometimes it rebooted by itself...

Any idea? And by the way... my baseband is unknown, is that why it cannot get WiFi tether working?

Thanks in advance, cheers!
29th August 2012, 03:13 AM   |  #27  
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Put the brick in here for remember. Thanks your post.
8th September 2012, 10:11 AM   |  #28  
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I already have v18f, but I can't root it with tpsparky. It always says "device not found" over and over again...
How did you guys did it???
8th September 2012, 03:37 PM   |  #29  
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Quote:
Originally Posted by CA3iR0

I already have v18f, but I can't root it with tpsparky. It always says "device not found" over and over again...
How did you guys did it???

Go into settings > developer options and check usb debugging

Sent from my LG-P930 using xda premium
8th November 2012, 07:27 AM   |  #30  
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Question Linux or OS X.
Say one doesn't have any access whatsoever to Windows, actual or VM... Any way to root this device on Linux or ( maybe ) OS X ?

My not so epic search skills don't help much.

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