The R4 came in today and I've downloaded the 1.13 firmware and installed it instead of the 1.11 it came with. The games load and play perfectly. Then I pressed the middle Icon (multimedia) and moonshell had a reading error. But thats all the info I got from the msg given. I am using a 512mb microsd, 1.13 firmware. 444mb used on the card including firmware. Let me know what I can do to fix this problem. I seriously thought this was the easiest flash cart in terms of getting it to work but I am definitely having issues with moonshell.
find the file "_DS_MSHL.nds" and rename it as "MoonShell_R4TF_M3Simply-R4DS (MicroSD Card).nds" (that's the original name of the .nds file) optional, get your favourite app or game and rename that as "_DS_MSHL.nds" and see if that wil boot if you hit the multimedia button.