I'm sorry but how do you think SD cards become corrupted? Just because it worked before, doesn't mean it can't be corrupted now. Lets say your PC breaks today, and you post about it on a forum .. Are you just gonna say "Well it worked fine yesterday so there's no way it can be broken!".
If you're too lazy to check for errors with h2testw then so be it but if all else fails you should at least try it - doesn't hurt.
Idk what your second issue with the d-pad is but I doubt it has anything to do with CFW or A9LH, and I'm even more doubtful that the d-pad error has any relation whatsoever to your current problem.