Hi Jonny,
I used to have a Brauniger IQ/Basic GPS, which I believe is exactly the same unit as the Flytec 4105, (Same software).
I found it impossible to set up, and even got in touch with Brauniger but to no avail.
Despite making enquiries here on the forum, I received no replies as nobody appears to use them....I've since found that the Brauniger/Flytec units are predominantly soaring instruments, (best suited to paragliding as opposed to paramotoring).
I now have a Garmin 495 GPS......
Hope this helps.
Neil..