GSIs usually require a clean slate. Use fastboot -w (Note: This erases everything on your phone).

. 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

For developers and advanced users, working with system-arm64-ab.img.xz can be an essential part of customizing and optimizing their Android experience. Here are a few common use cases:

| GSI Type | Pros | Cons | |----------|------|------| | | Most stable, pure Android, latest security updates | No custom features, strict compatibility | | LineageOS 19 GSI | Added features (Privacy Guard, customizations) | Based on AOSP 12, but third-party | | phhusson’s SuperIOR GSI | Lots of fixes for broken hardware | More complex, experimental | | Pixel Experience GSI | Pixel-specific goodies (unlimited Photos backup) | Heavier, may lag on older devices |

. These images are pure Android implementations based on the Android Open Source Project (AOSP) code, designed to run on a wide variety of Project Treble-compliant Android Developers

You can check using:

AB (Seamless Updates) – supports dual system slots (e.g., slot A / slot B)

out/target/product/arm64/system.img