But now I'm confused about what is supposed to be happening!
When doing either a Flash or a Format in V2, the blue led gives a brief initial flash (presumably some sort of handshake check) then rattles away for over half a minute as it sequences through the addresses.
Doing a V3 Flash does the same.
But doing a V3 Format just gives a single brief flash, then pops up a window a second or two later without doing any sequencing through addresses.
I've assumed this to be wrong because it doesn't sequence memory as the V2 Format does.
But now that I've done a V3 Format from the SETTINGS page I notice that it doesn't sequence through either... it just gives 1 brief flash of the led then the browser loses connection - although evidently resetting something, cos any program is lost, and the Edit page is empty.
So I'm wondering if the V3 Format operation may have been changed to also just do a quick SETTINGS type of re-initialise Format, instead of the full sequencing format like V2 ... in which case it may have been working all the time?