@QuietAdmin 

I have one lying on the shelf, I'll blow the dust off it and do some testing. 

  @MR.S thanks. Let me know if you can reproduce.

@tp-link reps - can you help too?

  @QuietAdmin 

it looks like it went well for me without any major problems this time. I don't have a local controller, the controller is somewhere else and is connected via wan. I don't know what your setup is like?

it is a bit more work but you can delete the router from the controller and upgrade in stand alone to see if you can do it then.. when it is upgraded you can adopt the router into the controller again.

  @d0ugmac1 yes.

The first attempt was automatic using the sugested firmware

The second was manual, using the firmware downloaded from the TP-link site, and unzipped before uploading.

Both failed.

I rebooted twice as well, to see if that was the issue.

Don't know what else to try.

  @QuietAdmin 

Failed to upgrade Router to firmware version 1.3.0 Build 20230511 Rel.51317
Please check your network configuration and make sure the device can access the Controller's HTTPS management port.
 

  @esctec 

this one is self-explanatory. you must ensure that the device being upgraded has contact with the controller's management port.
as the message says.
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