This turned out to be a red herring, Chromium (on Linux) was reporting all was ok connection wise, but it was only when I switched over to Chrome (on my Mac) I realised there was a connection error with the device. So I attempted to do a firmware update, 20.7 has failed three times now, after I restart the device the led is red and nothing happens. So I tried version 20.5, which looks like it's successful at the end since the led is green, but I get the following error:
Program Error 0x60 Failed to start program task
and restarting the device brings back that red led, and I again see the above error.
Is there a more reliable version I could downgrade to?