FYI, the Eachine I6 radio is the same of the FlySky I6.
The only difference is that the Eachine menu isn't accessibile.
But Eachine Customer Support gives the solution:
To get to the menu settings follow the steps below:
- Turn off the transmitter.
- Press the two bottom trim towards the center then turn ON the transmitter. This will make the Ok button available to change settings.
Additionally you can set failsafe by going into the menu then click 'ok' on System Setup -> RX Setup -> Failsafe.