First time Gateway and 3DS user here. Opened both my 3DS and Gateway together. I do have the luxury of having 2 x Gateways and 2 x MicroSD cards to troubleshoot. It keeps telling me that no Card is inserted in to game slot. 1. I Ran the exploit on the blue card. 2.Copied launcher.dat to root of 3DS SD card, 3. Ran win32diskimager-v0.9Imager on Sandisk 2GB MicroSD, and wrote GW 3DS test rom, placed it in Red card. 4. Booted up 3DS, Settings, Other, Profile, DS Profile, it reboots but still doesn't find cart. I tried the same thing on 2 different 2GB SD cards, one was a cheap one and one was a Kingston. I tried placing the MicroSD in my second Red Gateway Card, same problem. Maybe my version of Win32 Disk Imager? Any Help appreciated.