Just had a panicky call from a fellow villager ...........
"My Sky Box won't change channel, turn off or owt else!
Rebooted it, checked function restored and checked firmware status: It had received an overnight "upgrade" to O/S 1.2S4FM EPG 3.8.8 (as above)
Don't know yet whether it will misbehave and turn itself off or not as it's on soak test right now.
But the box is a "Refurbished" Grundig of uncertain vintage, not a Pace DS430N.
So expect problems across the board as this new firmware continues to be rolled out )(-red
I suspect the reason why DS430Ns were highlighted earlier will be due to the roll-out schedule: As I recall from previous updates, they seem to be done in batches by Box Type/Model and by other undefined (to us!) parameters).