System-roar-arm64-ab-vndklite-gapps.img.xz

This file represents a compressed Android system partition image designed for specific custom Android builds, likely within the Project Treble or Generic System Image (GSI) ecosystem. The filename indicates that this is a full operating system image tailored for devices with modern partition architectures and specific compatibility requirements.

# Reboot to bootloader
adb reboot bootloader
The file is double-packed:
Before analyzing the name, we must understand the why. This file is a GSI – a Generic System Image. Project Treble, introduced with Android 8.0, decoupled the vendor implementation (hardware-specific code) from the Android OS framework. A GSI allows a single system image to run on any Treble-compliant device. system-roar-arm64-ab-vndklite-gapps.img.xz
The file system-roar-arm64-ab-vndklite-gapps.img.xz is a specialized, community-built GSI, often attributed to the developer AndyYan (famous for "phhusson's GSI builds" and his own "Roar" variants). This file represents a compressed Android system partition