Correct. Always have a NAND backup. Thank god there is no permabrick in this scene and anyone with a backup can feel 100% safeIf you are using a MMC (sys or emu) where you applied "Incognito" modification (using Incognito_RMC for example), I think you should be safe from "data stealing" by homebrews when CAL0 protection is off. However, it could still be written so you are not safe from "brickers".