I have R4DS and it had worked just fine until I went online with 'downloaded' Power Pro Kun baseball game from Konami. I just wanted to test if it works on wi-fi but that totally messed up my NDSL. Now everytime I play games, especially Konami game - those baseball games, it turns off my DS after 3-5 min of playing. The reason I believe the wifi have done something with my NDSL is that the games are totally working fine with my old fat NDS which I never tried to go online with. I guess wi-fi updated my NDSL's firmware or whatever. So I'm asking you that if there's any way to downgrade my NDSL's firmware. If so, please tell me how to do it. Thanks.