My friend accidentally updated my 3DS from 9.2J to 10.6J. I have no problem with updating, but the problem is that I can't access the eShop or Miiverse. Doing so gives me the error code of 022-5540 for Miiverse, and 022-2634 for eShop. How do I fix this? I have a NAND backup of my system when it was 9.2J, will that help?