I just bought a whole set of Pokemon Sinnoh series (DPPt) cartridges from some supplier in eBay. He seemed legit, with a rather good review score 99.2% out of some 3000 reviewers, so it can't go wrong (other than the fact that the cartridges did not come with the box). Anyway, I managed to start up all the cartridges, so everything went well. My USB save backup attachment worked well, recognising the cartridges (example given is it working with the Pokemon Platinum cartridge). The problem began when I used my Action Replay on it. For some reason, upon loading the games after attaching the Action Replay, both screens turned white, not loading to the actual game. The problem is the same for all 3 games. I have checked with my "newer" (by release date) games, Pokemon SoulSilver, White and White 2 and I still have no idea what is wrong. The only thing I do know was that I updated my Action Replay to the 25 June 2013 firmware to make it work with my 3DS XL. Any ideas?