How to upgrade SCCM 2012 RC2 to RTM

I started this by inspecting the current version of my installation:

This server is installed in my lab, and although I have created couple of packages, most of my playing was around configuring the server. According to the official docs the upgrade will maintain everything I did.
If you have done many packages and any other settings I suggest you at least document everything, but don’t worry about it too much as it’s a pretty safe procedure.
So I have inserted the installation CD and started the install using the ‘Upgrade’ option:

There are actually no new updates to download so you can use the updates from when you installed the RC version:

And that’s about it. The server I have in my lab is actually a PC Jso the installation was pretty slow, but then finally:

And all the packages and configuration I made previously were maintained!

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