here's my r4 and heres my sdcard the r4 was working before this but i don't know what software i used but then i accidentally deleted the software. i've tried using wood r4 v1.12 and r4 v1.17 but both doesn't work. what i did was download the rar files and extracted them. then i formatted the sd card and put the extracted files into the sd card. what did i do wrong here? did i use the wrong software? please help! thanks!