Joerg Ewald <<joerg.ewald>>
writes:

I am really sorry about the cylinder size mishap in the first
version 4. I fixed it right after I found it, but unfortunately, word didn’t go
out fast enough, and some pilots were hit by it in competitions. Since then I
have flown numerous tasks with my 6030, without any problems. I really recommend
upgrading to the most recent version, even if you don’t use WGS84.

http://ozreport.com/22.126#2

Download the latest version here:
https://www.naviter.com/download-manual-support/#Flytec at Flytec 6030
firmware 5.00b. Or simply:
http://download.naviter.com/flytec/6030/Flytec6030_5.00b.exe.

Release notes:
http://download.naviter.com/flytec/6030/Flytec6030_ReleaseNotes_5.00b_EN.pdf

The separate new earth model:
https://b2b.naviter.com/product/flytec-6030-software-for-wgs84-distance-calculation/