Here is what I did myself. I have a switch that was on 5.1.0 without exfat support. Then I got a Microsd 128gb formatted to fat 32. Bought Sx pro, made a nand backup. Stored it at a safe location. Then I made an emunand via Sx OS. Booted via emunand and used choirdujournx and updated to 6.2.0. Copied all contents from my micro SD to pc, formatted micro sd to exfat, put back all the files again into the microsd and now: Enjoying all benefits from cwf and my nand is totally clean safe/untouched.













