OK I've tried with car1-developer-v1.02.upgrade and it has been succesfull. It works!! But what does it mean? I won't be able to upgrade? I think this problem can be due to my model, i don't know what is it. I bought it at Kagi (Jeremy Briggs) I thought it was a MK2a, but it has a tape where says "Inspected by xxx, Date : 27/04/01 ". Do i have an old one? How can i know it?

Thank you:

Miguel Pelaz. Madrid.