Backup the fog database using mysqldump.
Backup /var/www/fog, /opt/fog/, and /tftpboot using tar or other backup utilitie.
Download the fog_0.32.tar.gz files from sourceforge.
Extract it and run the /bin/installfog.sh script. It will upgrade the necessary components. Open the webUI. You should be prompted to update your Fog Schema (database layout).
You’ll need to put your 3.3.3 kernel back in place if you currently have it saved as bzImage.