He's got the Kobo WIFI (not the Touch) so 1.9 is current firmware I believe.
The Kobo Wifi isn't the fastest reader out there, but it was good value at the time it came out. I wouldn't recommend it for heavy pdf use. As Taming said, the Touch is wwwaaaayyyy better for pdf's, but still far from perfect due to screen size limitations. You're better off with some sort of tablet or e-reader/tablet hybrid for that.
Last edited by robko; 11-12-2011 at 12:34 AM.