Is there a way to update the Push Install Package with newer Signatures?

When I push install ESET (AV 4.2.40), it pushes with Signature Version 4972. That's January 2010.
Is there a way to bundle something newer so there is less of a gap between what is deployed and what my clients need to update to? I have another post about setting up multiple mirrors, as my branch-office clients are having difficulty pulling updated Signatures from my ERAS. I figured if I could at least deploy with something newer, my exposure until I can resolve the update issue would be minimized.
Thanks.

 

I've been told from Eset support that occasionally the bundled definitions and modules on the .msi installation packages you download from their website are updated, so I would recommend re-building your installer package from a newer msi file first.