@Drmarkf Thanks: all now sorted.

@Drmarkf I'm no further forward on this: please can anyone advise on how to reset the Deco units and connect again to the Virgin Hub3 in modem mode? Thanks.

Hi. For a couple of years I've been running a Deco S4 (3 pack) faultlessly using my Virgin Hub3 in modem mode: it has just worked except for the very occasional down-time from Virgin cable....