I have a switch and i tried to downgrade from 5.1.0 to 4.1.0 using ChoidujourNX and now i am getting this error on boot up https://drive.google.com/file/d/1M4OWBfiBXOsBCTyNV8HN4Y0xoXtx17bg/view?usp=drivesdk. can i save my switch without a nand backup?