Hi. I just downloaded my first map update via AvicSync in my iPhone 8

I am however having some problems transferring the update to my device (F60-DAB). Since the update is 3 GB i will not let me update via bluetooth. When i connect via USB it tells me it is transferring, but the progress bar never moves. I have waited more than an hour. The estimated time remaining just grows. At the moment it shows 142 hours.

Any ideas?