recently i bought an r4i while i was in china. When i got home i dropped the latest firmware from the site on it and then a couple of games, but when i pop it into my ds it just shows a blank cartridge. and when i start it the ds errors out. i tried it on my 3ds ( i have the wifi 3ds vr) and the same thing (3ds firmware hasnt been updated since time of purchase). any ideas or do i have a dead cartridge?