When OSMO ACTION was turned on, the inscription began to appear: Unauthorized device with no serial number. When I connect OSMO ACTION via DJI Mimo app, the following message appears: Connect OsmoAction-34C65A. I press: connect, a four-digit code appears, the same code appears on the camera, I press Accept, but the inscription Unauthorized device with no serial number appears on the camera again.
What should I do?

Hello there serg6118. I am sorry for the trouble this has caused you and thank you for reaching out. Since you are experiencing this issue on your DJI Osmo Action I would recommend you to contact our DJI support team to start up a ticket at ( https://repair.dji.com/repair/index ). We have the professional team who would do their best to assists you with regards to this matter. We hope to hear from you as soon as possible for a swift resolution. Again, I am sorry for the trouble and thank you for your understanding.

I try a firmware update. see if you can reload firmware, and or that fw99.99.9..9.. one I created a topic how to  downgrade. you need to  see if that fixes. but likesaid easy fix is send in for a  replacement

Fishycomics Posted at 5-7 02:35
I try a firmware update. see if you can reload firmware, and or that fw99.99.9..9.. one I created a topic how to  downgrade. you need to  see if that fixes. but likesaid easy fix is send in for a  replacement

Updating the firmware didn't help.

serg6118 Posted at 5-7 04:16
Updating the firmware didn't help.

Thank you.  then you are to get with DJI. if you failed refreshing or downgrading and not sure how to do it.   the app can be  deleted and reloaded, the  Bluetooth also forget my device and  that fails to   work,  then the camera itself has the issue in the internal memory.

Fishycomics Posted at 5-7 04:26
Thank you.  then you are to get with DJI. if you failed refreshing or downgrading and not sure how to do it.   the app can be  deleted and reloaded, the  Bluetooth also forget my device and  that fails to   work,  then the camera itself has the issue in the internal memory.

Nothing is clear from your explanations.

Downgrade firmware, see if that helps  if not then get with DJI like said
FW 1.50  find that and Try???

Fishycomics Posted at 5-7 12:07
Downgrade firmware, see if that helps  if not then get with DJI like said
FW 1.50  find that and Try???

I can't find the old firmware anywhere.

This is where DJI's Team should be offering a fix, they run the show, they have it all. but  rather let one of their professional teams, only  to be talked to by chat, that will say you need to send in the camera,

Fishycomics Posted at 5-8 03:20
This is where DJI's Team should be offering a fix, they run the show, they have it all. but  rather let one of their professional teams, only  to be talked to by chat, that will say you need to send in the camera,

Why don’t you just send him the older firmware and the instructions how to do it, you have posted plenty of videos how to do it and links to the firmware but most links have been deleted.

Help a fellow user out.

Per post #3.  its on here.