1. before i had an r4, id buy games like a regular person. mario kart was one, and i completed it. now i loaded up mario kart onto my r4, but i dont want to have to unlock everything again, so i used cheats to unlock everything. except it didnt unlock everything. ROB is missing from the character select. another problem with the cheats is that when i use some of the cheats (and this applies for a few other games as well) the game freezes. for example, i use "always have bullet bill". i play a track, finish, but when the game tries to load the next track in the cup, freeze... just a black screen. can anyone help with this? 2. my r4 has been freezing more often lately. not so much that its a pain, but its enough to be noticeable. ive had my r4 for a while now. is this thing wearing out or something?