I use the TL-PA411KIT and wake on LAN works fine over the adaptors. You will need a 3 port adaptor such as the TL-PA4030KIT to connect 3 devices to one adaptor.

That's exactly the download link I used for the firmware. It didn't fix it for me.

I downloaded it from the above link. It redirected to the homepage but found it by finding the downloads for Powerline Adapter. It moved to...

I have applied the firmware update 1.1.0.848-02 to my TL-PA411 adapters but still getting frequent drops for up to around 30 seconds. It seems a bit better than it was as it was dropping for over 2...

How do I update the firmware for TL-PA411 V1? The link that NickAskew gave is now broken and just redirects to the homepage.

I am sick to death of the connection constantly dropping all the time. This is really driving me insane