SOLVED!
Hi there everyone I desperately need some help here.I'm very experienced setting up and working with A2.
Now I am I installing A3 Pro on my drone, replacing A2.
When I were trying to install new firmware for the A3 it stopped at 98% and I get those two messages.
​​​​​0306 controller can´t get device loader status! Total query 20
1d00 Pmu device is not connected!

I am stuck there and no way getting in to the Assistant to resett or anything at all.
Every time I restart the drone and open Assistant I get this message:  The device entered loader mode. Pleasee upgrade the firmware and try again.
I am stuck in this loop.
Light the led module does not light up.
Please if someone can help me out here, do so. I am so desperate.
Thanks

Hi sir, how can you solve this problem? I face the same problem.

djiuser_wINJ1sbD3nTy Posted at 7-12 01:04
Hi sir, how can you solve this problem? I face the same problem.

I am not sure what changed.  It was some time ago sins then but what I recall is that I just trid again and again and again til it worked.
Sorry I do not have good solution to help but this is how I remember it.