Thanks for the replies. I'm trying to connect TO the Pro1 from a device with a larger keyboard and screen :-)

When I first tried it I think I saw 'connection refused', but now it just times out. Tried from multiple devices and multiple wifi networks. It also works fine with multiple other SFOS devices.

I dont see the ip listed in known_devices on this machine, but it certainly isn't listed on at least one other tried, because its a new linux install. Good thought though, I hadn't checked before.

At least now I know it works for other people, and I didn't miss some arcane setting, I will carry on trying to figure it out.

....aaaand as if by magic it starts working all by itself! I've been trying for a week with no joy, I've changed nothing today and it's suddenly working

It must be the t.m.o effect !

This Pro1 just keeps getting better and better