I have no NAND backups (this was before I actually knew what I was doing), and I want to uninstall CFW on my reigon changed 2DS. I know this will result in a brick (without flashing the original NAND backup), so is using another Japanese NAND backup an option to then uninstall CFW? I assume I'm just kinda screwed in this situation (I'm fine with keeping CFW), but I just want to confirm. Thanks!!