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  • 2 September 2014
  • alessandro
  • Nerd
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LG G2: Ripristinare Firmware Originale KK 4.4.2

Amo molto le ROM Moddate, in particolare la CyanogenMod, con la quale mi sono sempre trovato bene. Tempo fa stavo provando un LG G2 che originariamente montava Android JB. Non volendo aspettare i tempi della casa Coreana, decisi di installare CyanogenMod11 con Android KK (chiaramente moddando la recovery, installai una Clockwork Touch).

Successivamente decisi di tornare alla ROM originale, ripristinai quindi il backup effettuato con la recovery CW. Con amara delusione, mi accorsi che al primo aggiornamento OTA, il telefono andava in boot loop.
Questo perchè, scoprii poi, il telefono non può essere aggiornato via OTA se non è presente la recovery originale.

Mi misi alla ricerca di una soluzione, trovando varie discussione sui forum Android. Su XDA trovai una soluzione vincente, che incollo qui per comodità:

1- You have to install LG Phone drivers and Android.sdk
2- Download TWRP for LG G2 and paste it to platform-tools folder in android.sdk direction on your PC
3- Go to recovery and plug the phone to PC
4- Next, in your phone recovery CWM you have to choose install zip and install.zip from sideload. Then wait for install the drivers of phone on your PC.
5- Open console in folder platform-tools (shift + PPM) and type adb sideload nameofTWRPfile.zip
6- Then reboot phone
7- Next enter to another time to recovery (now will be TWRP recovery)
8- Enter advanced and terminal console
9- type: dd if=/dev/zero of=/dev/block/platform/msm_sdcc.1/by-name/fota
10- Reboot phone

A questo punto tutto risolto, ma rimane il problema principale, installare una ROM originale con tanto di recovery ufficiale.
Sempre nei forum ho trovato una soluzione molto semplice, che incollo:

Download both the ROM zip file linked below and SuperSU zip file (if you want root) and copy to your SD card.
You need to be already on Rooted JB or PURE CM11 with either TWRP 2.6.3.3 or 2.6.3.4 or TWRP 2.7.0.0 (nothing else).
Made this from the new 80220D open EUR kdz.
This is the complete LG KK 20D ROM – nothing missing or messed with.
If you follow the method below exactly, no Audio glitches, no Touchscreen problems.
You can flash SuperSU and get root if you wish – your choice.

I provide this assuming you have an understanding of the terminology used below and appreciate that any flashing activity has some risk.
I strongly advise against using any form of restore from previous backups, such as TB or Nandroid.

Once the process is complete, custom recovery will be lost.

Method:

1. Reboot to TWRP recovery
2. Wipe: System, Data, Cache. Dalvik (nothing else)
3. Flash the ROM zip – ignore any “FAIL” warnings.
4. Wipe Cache and Dalvik (nothing else)
5. Go to the Mount page in TWRP and select System (leave the other defaults alone)
6. Flash the SuperSU zip – ignore any “FAIL” warnings
7. Reboot
8. Done

file necessari:
ROM: https://docs.google.com/uc?id=0B_ESvfVtZzEwR0dCNEcteVRfcVU&export=download
SuperSU: http://goo.gl/rsCSdJ

link utili:
http://forum.xda-developers.com/showthread.php?t=2567493
http://www.androidiani.com/forum/modding-lg-g2/369228-guida-ripristinare-il-normale-boot-del-g2-dopo-un-aggiornamento-ota.html

Alessandro Buzzoni

Full time Dreamer...

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