Just got an ASIAIR Mini and a second-hand iOptron ZEQ25GT with the 8408 hand controller. Everything I can find from ZWO and iOptron say that a FTDI cable from the controller to the AIR Mini should work, but every time I try to connect I get a "Connection Failed. Check serial cable and baud rate" error.
I've checked firmware on everything, it's all up to date, and tried every baud rate. What am I missing? I've seen posts of people using the ZEQ25GT and an ASIAIR, so I know it's possible!