Hello! I have a R4 flashcard (probably the Original, it says: [R4 Revolution for DS (NDSL/NDS)] on the card) and I wanted to replace the standard 2GB microSD card, so I bought a [SanDisk Ultra 16GB MicroSDHC I] and it froze on the Loading... screen. I installed the firmware and the same thing happened. Then I found a [Toshiba MicroSDHC 4GB] and the same happened. Can I use one of these cards or do I have to buy alternatives?