We have already discussed how to upgrade the firmware of your FrSky Taranis radio, however if you want to load the EU specific firmware onto the internal XJT transmitter module you cannot simply use a USB cable.
Since Taranis firmware (OpenTX firmware) 2.1, it is now possible to update the internal RF firmware directly from the taranis menus itself as shown in our Taranis firmware upgrade guide, or Frsky receiver firmware upgrade guide. However if you have any problems with that then you could still try this method if you have the spare cables etc...
What you need
Making the upgrade cable
You will need to connect the FUC-3 cable to the SPC as shown below
Now before connecting the 3 pin servo lead into the back of your taranis you need to adjust the cable of the SPC. First remove the red power lead and move the black ground lead to the middle slot as shown below.
Upgrading the firmware
With the taranis radio turned off, you need to plug the SPC into the back of your taranis according to the image below. And plug the FUC-3 USB into your PC.
If your computer does not automaticaly install the drivers, you might need to manually install them by downloading the drivers here. Once everything has installed you can view the device on your device manager under virtual COM port drivers
Now you need to open the
frsky_update_Sport.exe file you downloaded before, once open select the correct COM port of the CP2310X device (FUC-3). You must also select the upgrade file (the .FRK firmware file you downloaded)
Now you must turn on your Taranis radio to ensure the interal RF is powered, the application shold show a message telling you the device has been found. If not, close the application, and disconnect the cables and start again. You might also want to restart your PC, or run
frsky_update_Sport.exe as administrator too.
Once you click download the firmware will start to update, and after a few moments you will see a message telling you it is complete. Now your firmware on your interal RF radio of your taranis has been upgraded!
If you have any questions just let me know and I will try to help.