DS 6.9 SP6 Linux Automation Environment

I recently upgraded to  DS 6.9 SP6 but I am having a hard time locating any documentation on how to update my Linux pre-boot (automation) environment. 

I am currenty using 2.6.27.7 and would like to use  2.6.32-358.el6 (which is listed as supported in the release notes) so that I can compile a more current driver set.

I inherited this system so I am still trying to get my feet under me.

Any guidance would be greatly appreciated.