Mike, I contacted Celestron support on 6/14/19 to see if they made any progress on the Nexstar+ firmware. They emailed me back today (6/20/19) saying the following:
Thank you for contacting Celestron Technical Support:
My name is Johnny and I would be happy to assist you.To update the NexStar + hand control you will need to use CFM. CFM will automatically select the latest firmware, which contains the GPS fix."
I updated the hand controller by doing the following steps suggested by Johnny.
Before updating the controller the date read:
11/04/5 and the versions was HC: NXS 5.29.6225.
After updating to the latest version HC:
NXS 5.31.9102 and being linked to the GPS the date read : local = 01/15/96.
It appears that the latest update still does not correct the GPS rollover problem.
Edited by jae62, 20 June 2019 - 09:34 PM.