I just got my 3DR 433 mhz kit. But one of the radios seems to have a problem.
When i plug it into my computer using tha FTDI cable the green light stays on and the red one blinks once about every scond. The terminal says:
The hardware seems ok. I was able to get it into bootloader mode by shorting the CTS and ground. firmware was then updated sucessfully. My other "Air"-radio is fine and i can upgrade firmware in "AT" mode and configure it with APM planner.
APM planner 1.1.81 mav 0.9