SD CARD ACCESS ERROR ON MODEL NO. JXD 661 MP4?

I AM ALSO USING THE SAME MODEL. AFTER I BOUGHT IT, IT'S SD CARD FUNCTIONED NORMALLY FOR 10 DAYS. AND THEN SUDDENLY DETECTION FAILED. WHEN CARD IS PUT IN THE DEVICE, AND MEMORY STATUS CHECKED FROM THE JXD 661, IT HANGS. IT SEEMS IT IS THE PROBLEM OF HARDWARE. WHEN IT'S BATTERY WILL BE DUE FOR CHANGE, I WILL GET IT CHECKED. TILL THEN I AM ONLY USING 512MB. GOOD LUCK TO YOU ALSO. IF YOU ARE SUCCESSFUL WITH THE REPAIR, WRITE TO ME ALSO.

UPKAR
November 2008