Unity Asset Bundle Project Update/SSL iOS Issue

I have a game with downloadable asset bundles for an iOS application. I recently updated the Unity project from 4.0 something to 4.2.2. However, I did not update my asset bundles on my server. Do those have to be updated as well? That's a lot of asset bundles. Where can this be found in the documentation. Part two is that we removed SSL certificates from our server. We aren't doing anything that needs ssl and our code has never used https. Does iOS block non SSL certified connections from Unity?