Hello! I found this on the forums (posted by Apache Thunder): Could this be the clue to downgrading 10.5.0.30u? If I'm comprehending this, you could get a Nand.bin of another ds that has 10.3.0.28u or 10.2.0.28u (same firmware), decrypt it, and overwrite the firmware partitions of another ds's 10.5.0.30u to downgrade it just to use sysupdate? Would overwriting the firmware partitions from another Nand.bin dump of another 3ds's theorettically work, or are the firmware partitions tied to the console? If so, is there a way to bypass this? I have a hardmodded 3ds in which I can directly write to and from nand with, so I could try this out, all I would need is another persons dump of their 10.3.0.28u or 10.2.0.28u. Sorry if this makes no sense, I've been up all night trying to figure this out. If anything needs clarification, or you have any information that could help this be achievable, let me know by replying in the thread. Thank you!