Hello everybody! I just downgraded my 3DS in order to decrypt ROMs as I cannot get Decrypt9 working on my 3DS. I successfully installed the MSET exploit using GW Blue card, but when I tried to launch it from the NDS profile settings it didn't work and showed a black screen displaying "An error has occurred. Please hold down the POWER button [blah blah]". I verified if all the files were present on my 3DS SD card, and tried to re-instal the exploit, but the Blue card won't launch at all and shows the same black error screen. After further verification it turns out my 3DS won't launch NDS games at all, I tried with my Mario 64 DS and my Kirby Super Star Ultra cartridges and it shows the exact same error screen, even if the SD card isn't in the 3DS... Does anyone have an idea of what could cause that?