If you just don't want to use that JSGME utility, it's pretty simple, dear mate.
As you sure may know, please as first backup all the relevant files you're about to overwrite.
Then choose what version do you like most, MP IC passed or SP.
And last, paste directly the 'Mods' Folder coming in the compressed file you downloaded, as it is, in that one with the same name which is in your DCS World or Open beta main installation.
That's it.
With the aid of JSGME this procedure should come even easier, I guess.
But I'm not an expert of it, sorry.
Good luck!
With best regards.