Many of my GBA games, that worked perfectly on my Supercard SD (albeit some had slowdown here and there) are not working, at all, on my M3 Real + GBA Expansion. Yes I used clean copies of the ROMs, not the Supercard modified ones. So far, going down my list I have less games that work, then those that fail. (Bad ratio...) I have checked the CRC32 of many that didnt work against the list on http://www.advanscene.com/ and they check out fine. I checked the CRC32 directly on the card also to make sure that it copied over properly. As far as I know, there is no manual patching needed for GBA roms. Here is a short, preliminary list of games that are not working on my M3 Real: Breath of Fire Breath of Fire 2 Castlevania: Aria of Sorrow Castlevania: Circle of the Moon F-Zero Maximum Velocity Megaman Zero Mission Gradius Galaxies I would have a bigger list, but it seems that when a game fails to load, it has a random chance of failing on the next game, even if its a known working game, and I dont like powering my DS on and off like that. Note that I have a Kingston 2 GB MicroSD (Japan). What happens when I go to load one of these games? Nothing. It puts me back to the ROM list (as always) but it doesn't 'process' or load the game in any way. If I keep trying, eventually (usually 3-4 tries) it just locks up hard. Am I missing something?