I don't know what is wrong, but my radio's connect 100% and I can do everything in Mission Planner but as soos as I click on the Terminal button it opens and then start talking alien to me.
If I connect APM with MP using a usb cable, the Terminal(CLI) is working.
I tried re-installing MP ... still garbage.
I attached a screenshot
Last thing, it did work before.
Do you have your board set to 115200 baud. Also note that the telemetry link sends binary data over the link, so if you fail to enter command mode, you will see 'alien' but that's ok. You can enter CLI by reseting the board and pressing return three times at the beginning.