i can't boot my 3ds

[G4merz]

so, i can't boot my 3ds because my card was completely corrupted (32gb card was saying that the max memory capacity was 30mb) and i could not format it. when i try to boot it up, it gives me an ARM11 error saying "exception type: undefined instruction". what do i do? also i bought a new card, but it didnt arrive yet.

 

[KleinesSinchen]

Exception type : Undefined instruction
Current process: pm (0000000000000000)

Is an incompatibility of Luma3DS v10.x < v10.2.1 with latest official firmware. Whenever you updated your boot.firm on the SD, you didn't copy it to CTRNAND. This is the part of The Guide needed → [Restoring / Updating CFW].
When your SD arrives you can restore a backup of your previous SD to it and everything should work again. For the case (*sigh*) no backup exist, you'll have to do the same part of The Guide followed by the "Finalizing Setup" page (link at the bottom of the Restoring/Updating part).

Please check the new SD with h2testw or F3 before trusting it.

If you have any further questions or encounter any problems, just ask again.

Good luck and have fun!