Hi ! There are a lot of time, I bought an R4 which works very well today .. Meanwhile, I obtained an Ez-flash IV that I use with my R4. It worked great until this morning .. When I try to launch my Ez-Flash, even without the R4, I can not because it's as if there was nothing in my DS (exept the R4) ... I tried to save other GBA cartridges (No Linker) and it works very well .. I tried also with my R4 GBA Exploader but without success .. I think the problem comes from the ez-flash (even for sure) but I do not know how to do this, knowing that I can take the SD card and see the data in there! How can I repare that ? I await your responses ! Good bye and sorry for my bad English, I'm French.