How to update the FrSky EthOS firmware on the X20 and X20S
FrSky's EthOS system offers most of the power and flexibility of OpenTX in a more straightforward graphical user interface. But EthOS also goes through constant upgrades as additional features are added and bugs removed. Updating EthOS on your FrSky X20 and X20S radios is relatively easy, and you can see how to do so below.