Install ClockworkMod (CWM) recovery. This acts as a mini-operating system that lets you install new firmware files. Phase B: Flashing a Custom ROM
Turn off the phone. Press and hold the Volume Up button while connecting the USB cable to your PC. The screen should display "Software Update" or a similar prompt. firmware+change+update+on+lg+p970+optimus+black
Changing firmware wipes your messages, contacts, and apps. Use tools like Titanium Backup if you already have root access. Install ClockworkMod (CWM) recovery
Most official firmware for the P970 is packaged in a single .kdz file. firmware+change+update+on+lg+p970+optimus+black
: Ensure your phone has at least 70% battery capacity to prevent it from shutting down mid-update.