The proper way to install AX 2012 RTM on Windows 2012

When installing AX RTM on Windows 2012 the prerequisite validation tool gets stuck on KB2390372, an update that you cannot possible install on Windows 2012. It gives a weird error message, "KB2390372v2 does not apply, or is blocked by another condition on your computer."

In theory CU5 solves this issue, but how can you install CU5, before installing RTM?

I have found contradictory information on the net, so I thought I would share with you guys what worked for me. Not sure if all the steps are neccessary, but..

1. Install the web server and the app server roles, make sure to include .NET and Identity foundation (not sure if this is n
2. Start the AX RTM setup
3. Install the setup support files, and configure most of the prerequisities
4. Download the CU5. 
5. Unpack CU5
6. Start installing CU5, tell it to patch the setup support files
7. Start AX RTM setup again
8. You DO NOT have to copy the CU5 files under the Updates folder of your AX install folder. This is a false piece of information (or at least it was not neccessary for me... but you know... it's AX. Your mileage may vary)
9. Just continue as usual, it should not ask for KB2390372 anymore