Windows 8.1 Update bits are on MSDN for subscribers

I'm installing 8.1 Update 1 now on my Surface Pro 2

it is on TechNet also

Installed on my SP2. :smile:
Attachment 61247
Note the power button in the upper right corner.

So the MSDN iso work on the Surface Pro 2? How long did it take to upgrade?

I didn't use the ISO - I just used the update. Probably took 20-30 min.

Yes it does. Installed on my SP2 in about 20 mins, clean install

Attachment 61252