PBX in a Flash 2.0.6.1.1 (64-bit) features CentOS 6.1 and provides your choice of Asterisk 1.8 (PIAF-Purple) or 2.0 (PIAF-Red) plus your choice of either FreePBX 2.8, 2.9, or 2.10.
NOTE: The 64-bit ISO is NOT compatible with Incredible PBX and requires a DVD because of its size.
For the Definitive Installation Guide, see this Nerd Vittles article: http://nerdvittles.com/?p=787
For the Incredible PBX Installation Guide, see this Nerd Vittles article: http://nerdvittles.com/?p=789
MD5 (pbxinaflash20611-x86_64.iso) = 05a9c1b1d55b11e7c70053cc0de0966d