thank you so much for your help, and i think i use a wrong firmware this is the information on it :2016 R4 SDHC 2DS 3DS DSi www.r4isdhc.hk DUAL-CORE SMART UPDATE and the firmware files are:( _ gba folder and _ds_menu.dat file ) i have a rom folder and app one, yes i think i break it , i have a...