I don't imagine the version should make much difference, they're basically the same except the Rev. C has more onboard storage.
Also want to point out another nice feature of this setup is that you can keep the beaglebone on despite removing power from the rest of the S2 by connecting a wall wart or USB 5V power supply.
step1
How do you extract the .xz file in windows ? 7zip says its not a valid archive .
http://s3.armhf.com/debian/raring/bone/ubuntu-raring-13.04-armhf-3.8.13-bone20.img.xznever mind I had an old version of 7 zip... latest one works with xz