Boot Image Extra Was Patched By Old Unsupported Magisk -

fastboot boot twrp.img # or any custom recovery # In recovery, check /proc/self/mounts for "magisk" adb shell "magisk -c" # Should fail if clean If you still see “Patched By Old Unsupported Magisk” after flashing stock, your may have cached the old signature. In that case:

fastboot erase boot fastboot flash boot stock_boot.img fastboot reboot bootloader # Re-initialize The error is a safety feature preventing boot loops caused by legacy root methods. Restore the stock boot image and re-patch with current Magisk to resolve. Always keep stock images accessible before rooting. Boot Image Extra Was Patched By Old Unsupported Magisk

fastboot flash boot stock_boot.img Or, if you can boot into system: fastboot boot twrp