The version right before round 2 is version 1.50, it tells you on the test screen network status screen. Software Revision Build 1.20.03 it shows that at the boot up screen. Not sure if that's the offline version.
I bought a Round 2 update dongle from yahoo auctions some time ago but suspect it's not much use as I suspect it is simply needed to validate some kind of online update process. The dongle itself doesn't appear to have any contents from what I can tell.
I was able to make a .img and a clone to a ssd. The problem is even when unlocking it doing this method, when you try to view the contents you can't. These pictures are of the cloned ssd trying to boot. It still requires bit locker password.
It turns out the offline patch is Ver.X08 and
Tekken 7FR online will end, March 26, 2020 when the big Round 2 update happens. There is a Round 2 USB upgrade that has to be plugged in the blue USB 3.0 and the regular usb dongle, but not sure if that updates it or if it needs to be online. I hope someone can get one of these updates or a way to update to round 2.