fastboot flash system system-arm64-ab.img

system-arm64-ab.img.xz Android 12 a Generic System Image (GSI) designed for devices compatible with Project Treble

Run uname -m in a terminal or check your device specs. If you have a 32-bit-only device (very rare after 2018) or an Intel x86 Android device (e.g., some tablets), this image will not work.

system-arm64-ab.img.xz represents a pivotal intersection in the Android ecosystem, specifically for the community-driven world of Generic System Images (GSIs)

. It serves as a pure implementation of the Android Open Source Project (AOSP) code, designed to run on a variety of Treble-compliant hardware by replacing the device's original system partition. Android Developers File Naming Breakdown

Let’s dissect the file name piece by piece: