@J.Erikson Thanks for your interest, I ended up reinstalling the firmware on each device using tftp software, now all have been flashed with new firmware.

ok I will try this and see what happens.

No, it just says it is up to date and never updates.

I have had a lengthy back and forward with support but to no avail. My main deco updated to 1.5.1 no problem (new deco added to network). My three other decos (3 pack) have all stayed at firmware...