I have an old Nexstar 11 GPS, not used regularly in recent years and I'm trying to solve the problem with the GPS rollover issue. It still connects with GPS and reports correct position and time but the date is 20 years out. I'm wondering if I can still successfully update firmware to fix this. I have two hand controllers, one is the original which used the north and level technology. When I look in Utilities for version number it shows 2.2 4.6 4.6 10.1. Not sure what these numbers refer to. The 2nd hand controller which I purchased later after Celestron abandoned the level north system, has version numbers HC 4.03, MC 4.06. I used to use the older hand controller by preference as I liked the simplicity of the GPS align feature. Just point it north and roughly level and it would automatically move to 2 stars.
I've never done any firmware upgrading before. Is it possible to upgrade firmware on either or both of these hand controllers to fix the GPS issue?