I have successfully updated to 10.6.7 following this thread's instructions. After the initial Snow Leopard installation, I download and installed the 10.6.4 Combo Update (Followed the guide procedures) and then dowloaded and installed the 10.6.7 Combo Update (Same as 10.6.4). I used the updated NetbookInstaller that was provided for 10.6.4 to install 10.6.7. In order to boot in "recovery=y" I had to hold the SHIFT button after restart, TAB didn't work for me. Thanks for the creating this thread!