Hello & Welcome to Just Answer,
Sorry to hear of the issue you are having with your GPS.
May I ask:
1) The FULL Make & Model Number of the device you are working with?
2) The AGE of the device?
3) IF the device was working well BEFORE the fall?
I see it has been a few days and I just wanted to follow up to see if you have any more questions concerning this issue or if the issue was resolved.
I look forward to any further questions or results that you may have.
Thanks, ***** *****