I would just get some work experience kid in the IT department to re-save the file with a different name and upload it.Yeah good luck with that. The problem you have is that, no matter how hard you fight, if the map update doesn't exist, Nissan can't give you one even if they wanted to. Apart from buying the car back, I can't really see how they are going to resolve your problem.
Don't get me wrong, I feel your pain and I think it's a bit rich of them to say "3 years free updates" without actually having the updates available to give to you (for free), but they can't exactly employ the services of a cartographer for a couple of days to quickly create some maps for you. Creating a map set is a rather expensive and time consuming process.
If one of the guys from work wasn’t on leave. I would ask what the outcome of his VW was. They had gps issues and not being suitable for purpose.
Stupid thing used get you to take an off ramp. Then get back on when on the fwy. And a couple of other stupid things.
These guys know the how the systems work. They would have gotten a discount out of it.
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