Hey what up forum!. So I'm excited because I was like meh i don't use nintendo online lol so I proceeded to mod my switch(8.1.0, not patched btw) and guess what... I had auto update on and now I'm at 9.0.0 yey me eh! Well I'm trying to figure out what to do. I was thinking if it was posible to downgrade even if I don't have a nand back up I was reading a tutorial online and it says that it is posible but I have to go lower than 6.1.0 example: You need the firmware files for the firmware version you want to upgrade/downgrade to. These cannot be shared here as they are copyrighted. Google is your friend. You cannot use files for firmwares 6.2.0-8.1.0 as the ChoiDujour PC application does not support these versions. If you want to specifically upgrade/downgrade to one of these versions, you must first downgrade to any other firmware version and then upgrade to one of these versions using the ChoiDujourNX Switch application afterwards. Any help is appreciated! Thanks!