mine was a version 2.0, i know how i screwed it up though, i didnt check what version of board the NF7-S 1.9 bios was for so i flashed it to my bios chip then when i rebooted it didnt post.. only afterwards i found out the 1.9 bios was for only revision 1 boards and mine was rev 2.. well its been flashed now and upgraded to the 1.4 bios and everythings working great!