If I'm logged into my 10.1 EC interface and click the version on top of screen then Download now I see a 2 path upgrade STEP 1 Download and upgrade to 11.2.2300.11  - STEP 2 Download and upgrade to 11.2.2315.09.   BUT when manually go to EC service pack page and put my current version in, it only shows to STEP 1 Download and upgrade to 11.2.2300.20.   there is no step 2.        I'd prefer to do 1 step.    can someone explain  the difference between 2300 and 2315 ?    and which path should I take?   If the 2 step path is best, do I need to wait until all/most clients have upgraded before I go to 2nd step?

thanks!