Firmware update of devices on remote sites is broken once again (has been for months now). I had previously managed to get it working by changing the controller ports from the HW defaults to the...

@RLI Thanks for responding, but as logical as it sounds, if that had been the issue, DMZing the OC200 would have solved the problem, but it didn't. Not even VPNing both sites through Omada own built...

It is important to specify exactly which controller settings are NOT migrated. This procedure doesn't transfer the controller IP from the old to the new controller or there would be two controllers...

One final notice as I'm closing all browser tabs related to this topic Snapshot from https://community.tp-link.com/en/business/forum/topic/559150 (Edit: Hank21 I just realized this thread was posted...

@nicolati I just took a look at my OC300 which only manages its local site, no remote sites. It's "HTTPS Port for Controller Management" is at port 443, same as yours. So if port 443 works for...

@Ryan213 I FIXED IT! I was no longer able to upgrade firmware on non-omada-router sites as well (or maybe I never did), so I started a port to port comparison of all the related tp-link web page I...