Welcome to Justanswer.com, my name is Dustin.I'm sorry to hear about the issue you are having, I will do my best to help you resolve it.
My apologies that no one responded to you sooner. If you still need help with this issue, lets try to master reset the device. This may get it working.. Heres how
To perform the master reset:
The Rino 610, 650, or 655t is now reset. You will want to leave the device outside with a clear view of the sky for a minimum of 20 minutes to acquire satellite data.
*User data consists of waypoints, contacts, routes, tracks, and geocaches
If you dont see the "erase all user data question" then repeat the above steps again starting with the device off.
let me know the results of this when you can, so we can either mark this issue as resolved or so I can assist you further.
I strive to provide great service, and greatly appreciate a 5 star rating clicked and submitted when you are satisfied.. I always answer follow up questions.Dustin S.Senior Technician and Network Switching Systems Operator / Maintainer.