Hello from downunder,

I follow your posts with great interest and although I don't own a BMW, I'm presented with the problems such as these from various sources. The "dead" mk3 and mk4 cases (usually coming from battery disconnects) is most unusual for an automotive grade item.

To cut a long story short, I have been able to "reflash" and bring back to life GPS computers that are pronounced dead, because no amount of OS CD swaping as worked.

So far the method has worked on Mk3 and Mk4.

It's very complex to undertake and requires specialised equipment.

Question is how can I help those with such problems from where I am?