Thanks. That's very interesting as I had tried downgrading and still had the issue. I've raised a ticket with TP-Link and they've acknowledged they can recreate the issue (I think on both FWs). Does...

I've found a solution - install OpenWRT. That comes with it's own problems, so I'd be grateful if you could resolve this in the official firmware.

I'm afraid this is still not working. I don't think it's the powerlines as other routers (Linksys, etc) work. I'd be very grateful for any more advice.

Correction - I was using the wrong package - now successfully updated although the version number hasn't changed. I will update tomorrow when I've been able to run some more tests.

When I attempt to update the firmware with the powerline devices over an ethernet cable, I get failed update messages.

gabrielhopkins wrote Hi Here are the details - it is the latest firmware: Firmware Version: 3.16.9 Build 141030 Rel.47420n Hardware Version: WA901ND v3 00000000 It's in AP mode. I tried that solution...