@Tintronic i have an OC200 behind an er707 local and an er605 at the remote site. frustrating as i also have a small unifi deployment on the same sites and they can upgrade no problem. does anybody...

@Tintronic did you find a solution to this? even with my controller in a DMZ i cannot upgrade firmware on 4 devices at a remote site. Everything else works fine, ive a VPN set up between the two...

Same problem with me using a new TL-POE170S @Clive_A

@Bofh Hi There, I am also having the same problem also using the TP Link POE170S