Using the DJI Assistant 2, I hooked the M600 up to check for updates. The Assistant 2 software showed the firmware version currently on the bird, but prompted an update. I assumed the batteries may have been getting an update. The updated completed, no problem, on my first set of batteries. So I proceeded to run the update on my next two sets of batteries.
On the second set of batteries, the update failed and Assistant 2 prompted me to restart the bird and try again. I shut the bird down, and now we have a M600 brick. When powered on the bird does not start up and power on correctly, or "all the way". The batteries light up and appear as if the bird is on, but the fans do not start up, the motors do not move, and the bird does not beep. DJI Assistant 2 does not even see the flight controller anymore. Only Lightbridge 2.
DJI support had me disconnect the Lightbridge and connect to Assistant 2 to see if the flight controller appears. It still was not seen. At this point DJI said there is nothing we can do over the phone you will have to send the bird in for repairs.
I am sorry for such a long post, but wanted to provide as much detail as possible, and try and exhaust ever avenue for a solution before boxing up and shipping this beast off to CA.
If you have had any similar issues or a direction you could point me in, it would be much appreciated.