Hi there,

I have done a fair amount of searching and cannot find a step by step instructions set on how to upgrade my nav system. I have a MK-III running V16 software. I want to upgrade to V24.1 - I read somewhere I needed a key-disk (Which I believe I managed to d/load) but for the life of me I cannot find the instructions on how to perform the actual upgrade. Can someone please point me in the right direction!