Error when installing RSAT on Windows 7 SP1

I just reinstalled my laptop with  Windows 7 64bit  and installed Service Pack 1 serparately.

I need to install RSAT, but once I start the installation, I'm getting the well known message:

"this update is not applicable to your version of operating system".

I tried to this solution:
https://www.experts-exchange.com/questions/26856278/How-to-install-RSAT-on-Windows-7-SP1.html?sfQueryTermInfo=1+10+30+amd64fre_grmrsatx+msu.msu

"Avoid the Windows Update Standalone Installer.  It worked for me without having to remove SP1 first.
Expand the contents of the *.msu file from the command line using the expand command.
expand -f:* "amd64fre_GRMRSATX_MSU.msu" %temp%\RSAT
After extracting the contents of the .msu file, you can install it by using Package Manager (pkgmgr.exe) from the command line using the following type syntax:

pkgmgr.exe /n:%temp%\RSAT\Windows6.1-KB958830-x64.xml"

but now i get this error :

"Operation Failed with 0x80070057"

Any suggestion is appreciated.
Thank you