If the phone continuously restarts after a stock update, perform a hardware factory reset. Turn off the device, hold for 10 seconds, and follow the on-screen prompt to reset. Device Not Recognized
: To wipe all data and return to factory settings, turn off the phone, then hold Volume Up and Power until the Recovery Mode menu appears. Select "wipe data/factory reset" using the volume keys.
Method 2: Installing Custom Firmware / ROMs (Upgrading Android) firmware+change+update+on+lg+p970+optimus+black
90% of flashing failures are caused by improper USB driver installation. Always use a rear USB port on a desktop PC for a stable connection.
Use the volume keys to navigate and the power button to select: Select and confirm. Select Wipe Cache Partition and confirm. Go to Advanced and select Wipe Dalvik Cache . If the phone continuously restarts after a stock
Select the ROM-copy D/L tab. Browse and select your downloaded .kdz file.
This guide is specifically for the P970 . Attempting to flash firmware from the LG P970G or other variants can result in a permanent "hard brick." Select "wipe data/factory reset" using the volume keys
:
: Use a tool like KDZ Flash Writer or HardReset LG Flasher . Select the KDZ file and use the "Normal Web Upgrade Test" or "CSE Flash" (for a clean wipe).