I don't know played some when i got it, but I got a DS Cyclo evolution NDS cart when it was released and have used it since and played alot on the new one. Im not sure how it works, does the flash memoy store the firmware? I think it might have a bit of trouble with the connectors because it doesnt boot straight away all the time, it needs a bit of wiggeling and a few tries. But it should initiate the Flash memory and if its faulty or not working it should print some error not just remove the icon? seems strange....
I get scrambled screen when i change skin, and I didn't have any to choose from except the standard one.
And it wants to be named BACKNDS...
Update:
Got it to work with GBA mode now, still missing the game icon...
The skins doesn't seem to change the GUI or GUI functions, only the pictures...
And I can browse the SD card from Extended mode (guess thats moonshell) is there any other extensions that can boot homebrew or Roms?
update 2: Clarification, I hvae tried several SD cards and they work with my M3 Perfect mini.