VNX5200 firmware updating

Hello everyone. I'm trying to update my VNX5200 from 05.33.000.5.081 to 05.33.021.5.322. When i try to do this i get the following error:

List of packages not installable because either one or more packages are required to be installed at the same time or incompatible with already installed packages:
VNX-Block -Operating-Environment
Internal Package: Base

In this article i found a solution that might help me. The solution was to install the KB488877-01.01.5.001-armada64_free.ndu which allows VNX5200 to work with SHA-2. But after installing the update my problem isn't solved. 

What else can i do to install the 05.33.021.5.322 firmware on my VNX5200 ?