Problem solved by powering off the existing router. Connecting the new one up to my ISP after copying down the details on the type of connection. Update the firmware, set to satellite mode. Power...

I purchased a brand new second AXE 75 so in theory this should work. Plug in an ethernet cable in the yellow block on both systems. Problem one the satellite system does not appear as an easymesh...

It appears that my AXE 75 finally has the firmware for Easymesh and ethernet backhaul. Since I'm lazy I thought I'd just pick up another AXE 75 and drop in a Ethernet cable between them. Yes I do...

@Kevin_Z Thank you Cheerio John

One of those "Real Soon Now" and we hope it works. For the moment it seems to be functioning as a mesh quite nicely so I'll just leave it as it is. Thanks John

@woozle Many thanks, I'd looked at the pge but it didn't sink in the details were there. It looks like I'll have to wait for ethernet backhaul. Any idea how EasyMesh deals with firmware upgrades?...