The Fortius thread is getting a little long in the tooth and is
outdated, started in 2013 things have changed. A Link to it is here
The current release version 3.5 as of Feb 2021 does not support the fortius in slope mode.
There are some builds that are working but will need to be
downloaded directly from GitHub. I have my Fortius running without
FortiusANT it plays the videos and ERG workouts.
If
you are a new user I
would suggest that you Install a released version which will have all
the relevant "Bits".. configure the athlete from this version... then
download and install to a different directory one of these "test"
version and use it for "Train". I have all three installed just make
sure the shortcuts are starting the correct .exe. If you already have
GC just download and install one of the builds to a different
directory.
This is a version I am testing it includes a calibration module
This one includes Virtual gears but not calibration... seems to be very stable
They both work for me.. You will also need the USB driver file which is here
Both
links on GC GitHub contain code not merged into the main branch as I said they
both work .... the build on the GC main page do not ATM
As I said you do not need FortiusANT unless using Zwift etc
I am sure any feedback on the builds would be appreciated as I seem to be the only tester
These builds will become obsolete / deleted but as of today 7 feb 2021 they are working.