(iQue cover photo since DS iQue firmwares are kinda my "thing" now lol)
This guide will walk you through region changing your DSi. You're essentially "cloning" the firmware and all files from another NAND. :!: This is a very dangerous operation...
Hey, about switch. If I want to change micro CD card to bigger size, Do I need to do something ? or I can just copy the content of old SD card into new once ?