SCCM 2012 - p.13 - How to installl SP1 on SCCM Environment

I had the opportunity to install SP1 on various SCCM 2012 Server.

I take some note about website that I have used for this difficult work:

Official Microsoft Prerequisite Checklist:

Step by step Windows Noobs Tutorial (I have followed this one)

At this website you can find a different procedure.

If you want to do a preliminar backup you can follow the following Microsoft Article:

Consider that with SCCM SP1 now you can recover a secondary site without to reinstall it.