(adsbygoogle = window.adsbygoogle || []).push({}); I downloaded mw3 and split it and it gave me 666 extension files or whatever can Install like installing a pkg? Or do I have to use multiman?

use mM and put them together

Do I put them on the root of USB or in folders??

And is it possible to install from install package fileS thing?? Cause i did that with dlc from psnstuff

If the files are split you need to merge them with mM. If not, you can install them as you would install any other pkg files.
Don't forget you need to use the rap files with ReactPSN once the game has installed :p You must login or register to view this content.

Ok thank you so just to clarify I put the three split files on the root of USB and when I click on install package files three files will show up and just install all of them? And I don't have to use multiman that way do I?

If the files are split, use multiMAN. I'm not sure how they merge the correct way, but the way I've been doing it is by putting all the split files onto the root of the USB, then there's an option in multiMAN to install pkg files. There, it should state (multi part) if you're installing split pkgs. Just follow the steps on there and you should be backed out to XMB where you can install in by the "Install Package Files" area and the pkg should be shown as a single one.

Thank you so much it's installing now and do I leave the exdat in the folder or put it on root?

I think you just leave it in root. If it doesn't find the rap files it will say. Make sure you run ReactPSN with an account named AA though

The profile aa isn't capped