F930BT - Not applicable program (USER files problem?)

[Vic0187]

Hello all,

 

A friend of mine, working as mechanics, gave me a faulty F930BT, and i want to repair it.

 

The problem is that the unit won't boot, and show "there is no applicable program". If important, I have to say that I don't have the original SD card of the unit!

 

I tried with the Testmode.key to access USER files and check it, but in this directory all the files appear with weird names, like "v+#é@?w" and no date of creation.

 

What should I do?

 

Can I just put updated files like the one of this thread http://avic411.com/index.php?/topic/35601-cnsd-310fm-eu-2012-update/  and expect that it can repair all the system files?

 

Or is there any other problem, and how can I fix it?

 

Thanks