I would try a factory reset but not something to do without a functioning screen. Have you tried a power cycle to see if the missing items can be recovered, after that I would try a reinstall of 4.7
You need to sort out the screen, it’s not a functional item without it.
Oh dear. If that becomes a challenge perhaps it’s time to get it sent back to Naim now rather than later. Possibly your dealer could arrange for courier collection direct from your house to Naim, and lend you something else in the meantime. They aren’t doing demos so may have an NDX2 available for loan.
Thanks for all the comments, it’s been a great help, can’t afford a NDX2 so will get a Auralic G1 and feed it through an nDac, will give me the Naim sound and more streaming functionality
I could ever need.
If anyone is interested, it turns out my problem was caused by an Apple Extreme Router that was dying ! Lots of intermittent faults until finally at the weekend it stopped doing anything really.
Replacement on order.