My switch was updated to 8.0.1 and was using atmosphere OS. All my games corrupted so i was going to downgrade to 7.1 using ChoijourNX. While it was downgrading, atmosphere crashed and now i cant boot into CFW or OS. I can boot into hekate but thats it. I have tried downgrading Choijour on my pc and got my keys from Biskeydump but when i try and use hactool. I get up to the stage 4 and then i get IOError: [Errno 2] No such file or directory: 'ini1\\spl.kip1' so i cant get my keys for hactool and then the ones i need for Choijour. I have tried googling keys.txt for choijour but thhey all give me 'failed to match key....'  Failed to execute script ChoiDujour. dont know what else I can do. have since bought another switch so not a big issue but would like the other for an emulator so would like it working. Sorry for the long post.