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Frozen how? Are you sure it's not just the glitched screen? Which means that if you press select and wait ~20 seconds, then power the device off you should find that A9LH is installed.

 

With the glitched screen you won't see anything happen after you press Select as it is frozen. But it is still doing its thing. If you press Select, wait, then press another button and the 3DS shuts down, then it was successful.

 

Maybe post pictures of the contents of your SD card so we can see if you've made a mistake.

Also, you'll want to test your SD card using H2testw to make sure it's not fake or corrupted.

 

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.