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[ROM] 4.2.2 Flashable [V500] JDQ39B.V50010A_US [easily go back to stock 4.2.2]

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El Montezuma
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Quote:
Originally Posted by Natakranta View Post
If you are using twrp then in wipe tab go to advanced and choose data, system, cache and dalvik. That's what i did. Then flash the LG rom.
As you wiped data your apps will be restored from play store. It would be wise to make backups with titanium and saved them on your PC so you can restore some/all user app data. Don't restore any system data.

So having 4.2.2 bootloader back on my device I'm restoring nandroid of my last clean flash which was SlimKat 4.8. Then I'll flash 4.9 over it to have access to sd card until tomorrow when I'll clean flash incoming SlimKat 5.0
I'm a Slim man as you can see from my signature.
I'm currently on Cm11 coming from 4.4.2 stock with brightness issue...

If I do a nandroid backup first of my current CM11, then I flash this one to go back to 4.2 and then restore my CM11 nandroid backup, will it work?

As far as I understood, the brightness issue is just bootloader related, so I don't know if my nandroid backup will erase the bootloader or not...
 
Natakranta
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Quote:
Originally Posted by El Montezuma View Post
I'm currently on Cm11 coming from 4.4.2 stock with brightness issue...

If I do a nandroid backup first of my current CM11, then I flash this one to go back to 4.2 and then restore my CM11 nandroid backup, will it work?

As far as I understood, the brightness issue is just bootloader related, so I don't know if my nandroid backup will erase the bootloader or not...
Nandroid never backs up bootloader. So it should work as good for your CM as it worked for my SlimKat.
Though there is now easier method. See this thread:
[HOWTO][V500] Flashable zips to change between 4.2.2 and 4.4.2 Base and flash 4.2.2 base.

Google Nexus 5 (Hammerhead) 32GB - me
ROM: SlimKat 6.4-WEEKLY-5657 - Recovery: MultiROM TWRP 2.7.1.0
LG G Pad 8.3 (V500) 16GB + SD 64GB - me
ROM: SlimKat 6.4-WEEKLY-5647 - Recovery: TWRP 2.7.1.0
Google Galaxy Nexus (Maguro) 16GB - wife
ROM: SlimKat 6.4-WEEKLY-5661 - Recovery: CWM 6.0.4.7
Google Nexus 7 (Grouper) 32GB - wife
ROM: KitKat 4.4.4 + SuperSU 2.0 - Recovery: CWM 6.0.4.3
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El Montezuma
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Quote:
Originally Posted by Natakranta View Post
Nandroid never backs up bootloader. So it should work as good for your CM as it worked for my SlimKat.
Though there is now easier method. See this thread:
[HOWTO][V500] Flashable zips to change between 4.2.2 and 4.4.2 Base and flash 4.2.2 base.
Great! Sounds good, will try it.
Many thanks
 
El Montezuma
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(Last edited by El Montezuma; 29th June 2014 at 07:28 PM.)
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Ok, just to confirm that it works.

My tab was on 4.4.2 out of the box. I install CM11 directly without reading a little (my mistake), and I discover brightness dimmer issue... I play with Lux to try to find a solution during a week but no success...

So, the solution is to revert back to 4.2.2 stock (or to a rom based on 4.2.2 stock) to install the correct bootloader and then restore your 4.4.2 Nandroid backup.

Here the steps:
-Nandroid backup of your tab
-Titanium backup (in case of, double protection)
-Copy the zip into the internal memory of the tab
-Reboot in recovery mode
-Do a factory reset (wipe system, cache, data (except data/media))
-Flash the zip
-Wipe dalvik/cache (not mandatory but...)
-Reboot into recovery mode FROM recovery (do not reboot system at this point)
-Restore your Nandroid backup
-Reboot system
-Enjoy

Cheers
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