Which XBMC build ships with aTV Flash (black) and how do I upgrade?

As per subject, I’m on the lookout to upgrade my default installation of XBMC that aTV Flash (black) installs via the extras which is based on the 10.x branch with a newer one off the 11.x branch of code. Anyone knows which version aTV Flash (black) installs and how to upgrade to the current stable one?

10.0.9  I think is with it.  It is whatever is the latest live like to the stable version.  maybe a higher number.

you have to SSH into your ATV2 and transfer in a *.DEB file and use the DPKG command to upgrade to a NIGHTLY BUILD version