System-arm64-ab.img.xz Android 12

system-arm64-ab.img.xz is a compressed Generic System Image (GSI)

Or flash to both slots

fastboot flash system_a system-arm64-ab.img fastboot flash system_b system-arm64-ab.img system-arm64-ab.img.xz android 12

4. Unlocked Bootloader

Essential. No exceptions. Unlocking wipes all user data, so back up first. Each OEM has its own method (fastboot oem unlock, fastboot flashing unlock, or proprietary tools). system-arm64-ab

Part 1: What is system-arm64-ab.img.xz?

At its core, this file is a Generic System Image (GSI). A GSI is a pure, unmodified build of the Android operating system, stripped of device-specific vendor customizations (like Samsung’s One UI or Xiaomi’s MIUI). It is designed to run on any device that supports Project Treble. fastboot flashing unlock

Flashing an Android 12 GSI brings the "Material You" design language and enhanced privacy features to hardware that might not have received an official manufacturer update: What is Android GSI?