Have you tried the Service Mode? Lots of information, some of it might be useful to you. Here are the instructions to gain access (a bit like safe cracking ):

Service Mode
Service Mode is Accessed as Follows:
• Open Start menu
• Press and hold the controller for at least 10 seconds
• Move the controller 3 stops to the right
• Move the controller 3 stops to the left
• Move the controller 1 stop to the right
• Move the controller 1 stop to the left
• Move the controller 1 stop to the right
• Press the controller once.
Note: To exit Service mode press the Menu button.

reference: X5 Reference Documents

Simon