First, extract the GSI .xz file to get the actual .img file. Then, reboot into fastbootd mode with fastboot reboot fastboot . Finally, navigate to the folder containing the system.img file and the Platform Tools, and run the command:
sudo umount /mnt/system
cat /mnt/system/system/build.prop | grep "ro.build.version" system-arm64-ab.img.xz android 12
Many devices require you to disable AVB verification to boot a custom system image. Download a clean vbmeta.img for your specific stock firmware and flash it using:
Generic System Image releases | Platform - Android Developers First, extract the GSI
Your screen will change, explicitly stating that you have entered "Fastbootd" mode. Step 3: Disable Android Verified Boot (AVB)
. It allows you to run a clean version of Android 12 on various hardware as long as they support the architecture and the A/B partition Android Developers Technical Breakdown system-arm64 : Specifies the image is for 64-bit ARM processors. : Indicates compatibility with A/B (Seamless Upgrade) partition layouts. Download a clean vbmeta
fastboot -w
: This signifies the partition layout. Android 10 and newer devices use either "A/B" or "Virtual A/B" partition schemes to support seamless, background system updates. .img : The raw partition image file type.
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ro.build.version.sdk=31 ro.build.version.codename=S ro.build.version.release=12