Ensure you are using the correct architecture zip. If the flash fails, try the "Direct Install" method from within the Magisk App (if you can boot the OS) by selecting "Restore Stock Boot Image." If you cannot boot the OS and the zip fails, you may need to flash the stock ROM boot image manually using fastboot ( fastboot flash boot boot.img ).
Version holds a special place in the Magisk ecosystem. Released in mid-2022 by John Wu (topjohnwu), this version was considered the pinnacle of stability before the major architectural shifts introduced in versions 26.0 and later. Many advanced users still prefer to keep a copy of Magisk-uninstaller-25.2.zip on their SD card because it is battle-tested and incredibly reliable. magisk uninstaller zip 25.2
The uninstaller does not simply "delete" files. Magisk creates a backup of the original, unpatched boot image inside the data partition (specifically within data/adb/magisk_backup ). Ensure you are using the correct architecture zip