Extract the .zip file on any folder on your Windows PC Extract via hardmod the nand of your 3DS Put the nand backup file renamed to NAND.BIN inside the same folder of the other files you extracted. Launch Autofirm_ENG.bat and follow instructions.

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I've updated the Reboot.ms' Autofirm in order to apply old 10.4 Native_firm also to any 11.2 NAND dump (old3DS/N3DS compatible)This is useful if you want to downgrade from 11.2 to 9.2 porting the SVCHAX exploit to 11.2.Download: https://mega.nz/#!kJ8D1bbS!ns7LA30d3QKnCX3RRXaHL0D48GTCf12o21D5hOkT5DQ USAGE:Once the NAND.BIN file has been patched, you should only write it back on the 3DS via hardmod.The batch file itself creates an untouched backup_nand.bin file in case something goes wrong.Already tested and working on3DS from 11.0 to 11.2.