Hello everyone,

I have downgraded my Arduplane firmware from V2.70 to V2.68. I used the procedure based on this instructions (http://code.google.com/p/ardupilot-mega/wiki/Code) and I was able to upload the V2.68 successfully. But when I click on connect button, it shows the connection is done, but I do not get any response from the sensors. (I am using Mission Plannes 1.2.35, mav 1.0). Although on the top right corner on the Mission planner I see it's connected, but when I move my APM 2.5 nothing changes in artificial horizon indicator and status tab and after few minutes it gets disconnect automatically. Also when I tried to upload back the V2.70 it gets disconnected by itself and showing error. I tried to read the forum before posting, but I couldn't find any similar topic.

Any help or idea will be useful.

Regards

Iman