Hacking R4ids.cn flashcard show white screen after Moonshell crash

[medoli900]

I have a R4ids.cn revision 8 flash card. I could play to my dumped game for years. I was listening to music on Moonshell, then the music suddenly hang. I restarted my DS lite then click on the Dorasu icon. The kernel do not want to boot, it only show two white screen. I tried to format my kingston 8 gB microsd card that came with the flashcard with the windows formatter in 16 kB and 32 kB.I also tried with the panasonic formatter tool. I tried to change the wood firmware to 1.19,1.54 and 1.64. I even tried to change to fake R4 firmware, but to no avail. I don't have a slot-2 flash cart. Can someone help me?