Hello,
thank you for your advice.
Unfortunately, it still doesn't work.
I tried multiple versions back to 3.3.0, all with the same result.
After searching the forums for similar issues, and using the links there, I updated this unit from 2.6.1 to 2.6.4 and with a 4df file to firmware version 3.1.1. Then I tried again different software versions and still no success here. All testing done from Windows 10 Home Notebook.
I was away from helicopters for a few years and I'm looking forward getting back in with a new to me Jeti RC system, using the integration.
After doing experiments back and forth this particular unit is now rolled back to sversion 2.6.4. Setup and preflight check done, everything looks ok and it's flyworthy in my opinion. It would be a pleasure to get the update running, but it's not a life requirement...
Today I connected my second spirit unit again to check and it was ok; update was possible. I've no clue what's wrong there...
Regards,
Dietmar