Many many thanks to Burakkucat and d2d4j. Life saver.
Mrs Weaver will kill me for being so utterly useless thus far in my attempts to blanket her world with Apple-friendly, MU-MIMO goodness.
I need the 1830 one btw, this thread started off being about the 1850, but then changed model later on, so the original title, which keeps getting propagated, is very misleading.
I tried to download a .tar file, having navigated to what looks correct for the 1830, and was told where to go by the web server. I need to buy a service contract to be able to get hold of the s/w it seems, but I have no clue where to even start with that.
So now all I need is
(1) a service contract,
(2) possibly a huge pile of cash but then I would probably want a service contract anyway
(3) and a pair of hands plus brain to do the conversion work, as I am so nauseous at the moment. Mrs Weaver discovered that she had screwed up (xxx) and accidentally doubled up on my opiates [pain] a couple of days ago, so perhaps that's why I feel awful.
* Anyone have any clue how to buy a service contract? Any rough idea of costs?
I should be able to get a refund out of eBay, but I really really don't want to. In any event, if I would find a service contract highly useful anyway, I don't want to start all over again and pay £400 more for a replacement pair of units that (hopefully) have the correct firmware load, since these were such a good deal.