Hi, i'm Italian... my english is not good, excuse me!

I have the clarion NX505E with this error:

"Check SD Memory Card. Please see the owner's manual in detail."

My clarion not work...i have only this errot on display.

I have insert the memory card in my Pc and i have find this folder/files:

UPDATE (folder)
Product (file)
SU13XXXX.041 (file)

i needed other files? HELP ME!