System-arm64-ab.img.xz [new] Now

First boot may take 10–15 minutes.

System: This indicates that the image contains the system partition. This includes the Android framework, system apps, and the core user interface. It does not include the kernel or vendor-specific drivers. system-arm64-ab.img.xz

This produces system-arm64-ab.img .

Before Project Treble, developers had to build custom ROMs specifically for every single phone model. This was time-consuming and difficult. Google introduced Project Treble to separate the Android OS framework from the low-level vendor hardware code. First boot may take 10–15 minutes