Don't end up with a brick.
Be smart, follow the directions.
Otherwise you will perma-brick your phone.
Due to the increased number of bricks I have to put this announcement
When I say to flash LG Stock Recovery, it means flash LG Stock Recovery.
It does NOT mean that you can skip this step because you want custom recovery, because you want to save time, because you are lazy, because LG Recovery hates your dog... whatever.
There is a reason we are flashing back to LG's recovery.
Steps 25-29 are NOT OPTIONAL!!!!
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I have made a nandroid dump of the complete V8 stock system, including kernel, rom, recovery.. everything except the evil devil RADIO. Restoring to V8 will allow you to accept the Sprint V9 update and update your radio PROPERLY.
It will also allow you to bring your phone in for repair, or just remove any hacks you did so you can sell the phone, ect.
This is 99.9% STOCK. This returns your phone to the state it was when you opened the box.
In fact, I pulled this from a brand new Optimus, using the rageagainstthecage exploit, being sure NOT to modify /system in ANY WAY.
However, in order to restore the recovery, I had to use V9's boot and recovery. This will not effect the upgrade process from V8 to V9 in any way.
Here is what you need to do.
1) Root the Optimus. I assume you are already rooted if you are needing a total system restore.
2) Download
GNM's v1.1.0 Recovery Kernel. Please use this recovery and no other as this is the only one I have tested. Use of another recovery kernel may brick your phone! Your recovery is going to be wiped with LG's recovery anyway, so don't risk it!.
3) Download
flash_image.
4) Connect your optimus to your PC and prepare for ADB usage.
5) Unzip the recovery kernel and flash_image.
6) adb push recovery-RA-GNM-thunderc-s-1.1.0.img /sdcard/
7) adb push flash_image /data/local/tmp
8) adb shell
9) su
10) chmod 755 /data/local/tmp/flash_image
11) /data/local/tmp/flash_image recovery /sdcard/recovery-RA-GNM-thunderc-s-1.1.0.img
12) reboot recovery
Now you should be in GNM's recovery with aqua-colored text. The controls are: Up = VolUP, Down = VolDown, Back = Back, Select = Menu (right of home).
13) Go down to "USB-MS Toggle"
14) Select "USB-MS Toggle SDCard"
15) Download my
Stock V8 Nandroid Dump
16) Unzip it into the root of the USB Device/SDCard
17) Safely remove the USB device using your PC OS.
18) Press menu to disable USB-MS Toggle.
19) Press back.
20) Select "Backup/Restore".
21) Select "Nand restore".
22) Select "mem=477M".
23) Select "BCDMRS12-20101122-1915"
24) Press menu to confirm.
25) When the process is complete, DO NOT REBOOT. Nandroid does NOT flash recovery by default, to protect from losing your custom recovery. In this case we WANT to lose it, otherwise we won't be stock, and OTA updates will not work. Therefore we must...
26) adb shell
27) mount /sdcard (if this throws an error about "device or resource busy", just ignore it)
28) cd /sdcard/nandroid/mem=477M/BCDMRS12-20101122-1915
29) flash_image recovery recovery.img
30) reboot
Now you are back to V8 stock! Enjoy!
To upgrade to V9:
Due to the kernel being from V9, the phone thinks the firmware is up to date, so you will NOT be prompted for the OTA update. However, since I have a copy of it, you can manually install it. Heres how:
1) Plug phone into PC
2) Enable USB Mass Storage
3) Download
the V8 to V9 update and place it in the root of the USB Device/SDCard as "update.zip" (renaming it is important!)
4) run the following from cmd prompt: "adb reboot recovery"
5) You are now at LG's dark-blue recovery screen (
should only be 4 options, if not STOP HERE)
6) Select the option with "update.zip"
7) follow instructions on screen (
VERY IMPORTANT)
You now have V9 Radio/Baseband and V9 stock update. You can delete the update.zip from your SDCard when you are back into Android.
To upgrade from V9 to VC:
1) Use the
LG Updater.
You now have VC Radio/Baseband and VC stock update. You can delete the update.zip from your SDCard when you are back into android.
To re-root on VC, see
this thread.
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