The is a legacy Android device that famously transitioned from Android 2.2 Froyo to Android 4.0.4 Ice Cream Sandwich (ICS) . Because official Over-the-Air (OTA) servers for LG mobile devices are largely discontinued, updating or changing firmware today requires manual flashing using specialized PC tools. Core Firmware Files & Formats
Install ZIP from SD card > Choose ZIP and flash the ROM first.GApps.zip.If the official servers are unavailable, manual flashing is required. This process typically involves: Downloading Firmware firmware+change+update+on+lg+p970+optimus+black