No issues (finally!) once on the latest 3.2.4b firmware for me. I have 6 of them in a large home, and also a 1200 WiFi adaptor.

Buy a pair, sell the other on ebay...

If I recall correctly you should not need to type in the MAC address it should scan and find it. Is is bricked after an attempted firmware update?You are directly connected via Ethernet cable? You...

(the key is often generated from a "network name" field depending which vendor it is.

Dave77 wrote There's no other way is there? I thought the Utility only works if you're connected via ethernet The tpPLC software also works over WiFi and / or Powerline.

Well you should definitely update the firmware if it's not current. Make sure you plug the PLCs directly into wall sockets and not into extension leads.