For most users, simply running adb uninstall --user 0 on all vendor packages achieves 80% of the benefit without custom images. But for true software freedom, the flash method above is the path.
But what does it actually mean? Is it a firmware update? A rooting method? A hidden performance tweak? sp7731e 1h10 native android free
Get the update.zip file (do not unzip it for most head units). For most users, simply running adb uninstall --user