Mavic Pro Battery Status GONE After Firmware Update Failure
1484 4 2018-7-19
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fanse0fb8e16
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I was trying to update my MP to firmware 2018-07-04.But it was stuck at the updating progress 32%.
Then it said "Update Failed" and the small red font told "undefined 0x020b04" and "Upgrade Error. Restart and retry"
I kept retrying for a number of times, but no luck.

I found battery status was gone when checking battery details.
IMG_3584.jpeg

IMG_3585.jpeg

Even worse, Battery Authentication Failed appears after starting my MP.
And it prevents me from taking it off.
IMG_3583.jpeg

By the way, the charge is totally normal, which means no middle two led issue in my case.
It looks like this brick would become a powerbank anyway.
IMG_8039.JPG

Any expert gives any hint here?
Appreciate in advance.
2018-7-19
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DJI Natalia
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Hi. We are very sorry for the inconvenienced that this caused you. Can you please try to use the DJI Assistant 2 to update the firmware of your drone? You'll need to use a PC or laptop to use the DJI Assistant 2. Please use this link for a video tutorial. If you have other concern, please let us know. Thank you.

2018-7-19
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fanse0fb8e16
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United States
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DJI Natalia Posted at 2018-7-19 13:04
Hi. We are very sorry for the inconvenienced that this caused you. Can you please try to use the DJI Assistant 2 to update the firmware of your drone? You'll need to use a PC or laptop to use the DJI Assistant 2. Please use this link for a video tutorial. If you have other concern, please let us know. Thank you.

https://www.youtube.com/watch?v=HZE-fP28htI

Thanks for your response, Natalia.

In DJI Assistant 2, it is stuck at the updating progress 32%.
And keeps asking me to retry and retry again.

Any other idea?
2018-7-19
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DJI Natalia
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fanse0fb8e16 Posted at 2018-7-19 13:08
Thanks for your response, Natalia.

In DJI Assistant 2, it is stuck at the updating progress 32%.

Can you please try to restore factory default? You can see this on the bottom part of DJI Assistant 2. Please watch the tutorial on the link that I gave earlier for reference. Thank you.
2018-7-19
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fanse0fb8e16
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United States
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DJI Natalia Posted at 2018-7-19 13:26
Can you please try to restore factory default? You can see this on the bottom part of DJI Assistant 2. Please watch the tutorial on the link that I gave earlier for reference. Thank you.

Tried, but no luck.
2018-7-19
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