My Via 1535 has worked fine since the day I purchased it more than 5 years ago. Recently (within the last month) it takes a long time to lock onto satellites and constantly loses the signal while driving when there's no obstructions between it and the sky. I've updated it with the most recent OS version 2663383 (App 12.074.2687300.84 (0) (2203, 4/20/2017)) and (GPS 2.18.903 127792), although that hasn't seemed to help.
I'm almost to the point of throwing this thing out the car window.
Any help in getting this to work as well as it used to will be greatly appreciated.