CU4 is the latest. You don't need to do anything on the DPs, they get upgraded by the primary after you have completed the upgrade.
There are a couple of good step by step articles on upgrade out there but is not really complicated, just have an doc you can follow for your environment. Cesar A On Mar 16, 2015 6:55 AM, "Charles Hiland" <[email protected]> wrote: > Good morning, everyone. I’ve been researching on upgrading from SP1 to R2 > and I think I’m almost ready to do so, but I had a couple of questions > regarding upgrading to SCCM 2012 R2 if you wouldn’t mind responding: > > > > 1. Is the latest CU version 3? My understanding is to install R2 > then update to CU3 immediately and I should be all set, correct? > > 2. After upgrading my primary site, what needs to be done for the > DPS? Our site is one primary and 6 DPs. > > > > Thanks in advance! > > > > -Charlie > >

