I thing I killed a MKIII NAV OS upgrade - help

[cooa99]

Hi All,
I need some help.
I tried updating a friend's Nav thinking it was a MKIV but it turned out to be a MKIII ( 2002 X5 Sports). His Nav/TV is the 4:3 Version. He is on the version that needs a cdkey.

here is what I did,
I put in the V31 OS software and put the key in ignition position 1.
I was not patient because I saw nothing showing on the screen, assumed the upgrade was not working (because the radio was just playing & nothing displayed on the screen) and decided to remove the disc
Now, the Navigation Menu does not show up on the display. This he said this has happened before in the past (though he never upgraded ) but later started working again.

So At the Moment, Navigation menu is not displayed and averything else works fine. when I put the Nav CD in the drive, it just sits there, nothing happening and sometimes U cant even eject the disc untill the car is off;

Please What step should I follow to resolve these issues

Thanks very much
cooa99