Issue when upgrading from 2.9 to 3.0.1

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1

Hi,

I’m kindly new in RC and multirotors and I’m trying to update my HK APM 2.9 to 3.0.1, I’m using lastest Mission Planner version, I can connect sucessfully to the APM and calibrate it.

My problem is when I tryed to update the firmware , the process read the hex file , stop around 90% and a message pop up : “Communication error - no connection”

I spend 2 hours with a “rc veteran” to find out what’s happened , we reinstalled an old MP version , change drivers , disable all COM ports like BT controllers ect… put it on USB2 port and we are unable to upgrade this APM.

As I read on some DYIdrone blog some had this issue and I need help to resolve this.

Thanks a lot.

2

Any help ? Hint ? clue ? Please…

3

Well it’s not a 3DR board so perhaps the folks at HK on their forums have an answer.

Is it a bare board I would go right back to the start with it.

4

Try to upload different version (firmware), I mean different release. (rc2, rc3, …rc5).
Or try do download first the hex file in your computer from GIT (not directly to APM board) , then after download, try to load that firmware directly from you hard drive.
Before doing any firmware update, PLEASE go in CLI mode and to a Reset and Erase or your APM. Then try a new load.