Well, I'm using the 4gb Sd card for my 3ds, but I want to upgrade to 32gb. The problem is when I copied all data from the old one ( 4gb) to the new one ( 32gb) I got error after using Ds profile method. I couldn't get into the gateway mode anymore. But when I put the old Sd card, its still working perfectly. What can I do now? Thanks for reading.