You need this version of NBI to go to 10.6.4 and beyond.-
http://dl.dropbox.com/u/863180/Netbo...212351.app.zip
Run it before you install the 10.6.4 update. It will auto launch on reboot, you'll see the NBI logo and could take anywhere from 5 to 20 minutes to do it's thing. Once it's done it will restart again and you should be good to go.
Mini 9 | OS X 10.6.7 | NBI 20100616212351| BIOS 05 | 32 GB Runcore | 2 GIGS RAM
10V | OS X 10.6.7 | NBI 20100616212351 |BIOS 06|160 GB|1 GIG RAM| 6 Cell Dell Battery
Functioning Hibernation
Back up Mini 9| OS X 10.6.7| NBI 20100616212351| BIOS 05 | 32 GB SuperTalent | 2 GIGS RAM