On Thursday, 16 June 2016 14:38:35 UTC+2, wrote:
so I made the ultimate dumb move - I updated a working IT device right before I went to a contest. It has not worked since.........

Ouch. If it's not broken and I don't need the latest gizmo I leave things alone.
Don't fix what isn't broken.
The S80 isn't an Internet connected device that needs to have the latest security patches installed so why bother updating it?

Q: When one performs a firmware upgrade does one need to re-enter the AHRS enable code again?