Solved the problem.
I removed the fuses from the navigation and radio etc which reset the unit. On repowering it, it went back to the software upgrade screen and continued to update.
I now have the latest software version and everything works!
I removed the fuses from the navigation and radio etc which reset the unit. On repowering it, it went back to the software upgrade screen and continued to update.
I now have the latest software version and everything works!