Hello, i own 2 Logitech Hubs, i added today a new device on the Hub#2 and i received at the same time the mandatory firmware upgrade 4.15.206 (from 4.15.201). Since firmware upgrade i get OFFLINE - COMMUNICATION_ERROR on Paper UI. Already tried to delete and rediscovery thing. It gets discovered…

UPDATE: downgraded harmony hub firmware to 4.15.193 using myharmony desktop application and it is now connecting.

@dr_vergleich [image] job: I am using exactly this with my Fritzbox 7490. This locks down the internet for that device. Me too. It’s a “Fritz!Box 6490 Cable”. I also set “HarmonyHub” to “gesperrt” (=blocked). → No firmware updates from Logitch! P.S: Check your DHCP settings for “HarmonyH…

Let’s see if this really blocks it. Also have the 6490 and blocked internet use completely for the hub. Hopefully logitech reacts and re-enables local access.

Logitech has released a special developer firmware. This one opens XMPP again. You can find it within the same tool used for the down-grade. For me it worked very well. => FIRMWARE TO ENABLE XMPP. FOR DEVELOPERS ONLY. [image]

Thanks for sharing. I’ll try later at home. Looks like the community put enough pressure on Logitech :+1:

trying to update to xmpp firm but i get a blank white screen when i press “Update Firmware”… [Screenshot%20(5)]

[image] Morgenroth: => FIRMWARE TO ENABLE XMPP. FOR DEVELOPERS ONLY. [[image] For me it worked very well. THX

Many thx, worked fine for me too :slight_smile: Merry Christmas [image]

[image] Constantinos_Contis: trying to update to xmpp firm but i get a blank white screen when i press “Update Firmware”… I had the same issue. I was running an older version of the MyHarmony application. You should download the latest version. It seems they updated the application framework …