Before posting this I tried a lot things but I didn't have any success. I installed the new patched twl_firm in both Sys and EmuNand. I tried to use RxTools CFW, but also it doesn't work. When I use RxTools, I launch the FlashCard and it just freezes on a black screen. If I use ReiNand instead of RxTools, it shows "Loading" forever. If I launch the flashcard by SysNand, also, give me a black screen (before was showing the forever "loading", but now just freezes on black screen) I don't know what more to try. I have a R4SDHC Dual Core. Thanks.