Hmm... well, you could examine the xml portion of the wim file and check the dates and stuff. It's kind-of hard to validate when you don't really have another to compare it to.
As far as I can tell it is identical to the esd install. Looking for anything to show me it is oem...or it might be just the untouched img OEMS get before they customize it.
I would say it is untouched, a few years ago I remember HP I think it was got blamed for an oem rtm leak before it should be out as they had their custom gear in it.
it was HP. build 7989 As for untouched, all files have matching dates and times. Until you look at the contents of the .wim, then you get different dates and times
Check SKIP and it will show Pro and Home. The latest Windows 10 does not use ei.cfg or pid.txt anymore.
Click skip or not at the time I did one of my 10240 installs and just manually entered the generic key every one has.
Sorry it took me so long to get it up there...the download was painful from baidu...and I only have 126Mb down/24 Mb up. So it took me a bit.
Indications are certainly pointing that way...and indications is the KB update last night is 1 of the day one updates...it was the first update to install even before updating all the defender crap.