Hacking Problem in ChoiDujour

[Draxzelex]

Hey man i tried everything every key dumper everything but it seems that its still not working.
I also grabbed keys from another switch but it still doesn't work man.I know this is an old thread but it would really be helpfull.

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Oh and above that, I get the error invalid NCA header are the keys correct? and i did everything what you said.

Are you using the correct keys? Double check that you have the right ones with the ones listed in this thread.