By @CyB1K

Notes: 5.05 / 6.72 / 7.02 / 7.55 / 9.00 Backport! All of the MW2 packs are different from 1.08, aswell as the MW3 multiplayer pack which also changed with 1.36! Finally after many learnings, patchings and weeks lost, the game is fully working now. With both MW2 and MW3 campaigns and multiplayers working. So much was patched to fix the game bugs aswell as their anti-offline bs and many other shit! As usual first thing disable the streaming texture, in every mode. You need to install the licenses, its what sets ownership to the game. You shouldnt need the warzone packs but i included them anyway lol CUSA23827 will come at a later time since i dont have it made yet, these games are HUGE, space and time consuming!

Extra notes:
While launching MW3, cancel the “Checking for Update” screen or “Launching” screen behind intro video, then press “GO OFFLINE”.
DO NOT cancel “Checking for Update” screen while entering MW3 Campaign, MW2 Campaign and MW2 Local Multiplayer.

In MW3 and MW2 Local Multiplayer, the following are unlocked:
All custom classes, blueprints, operators, finishing moves, and some dev options.
There are lots of unlocked hidden maps and hidden game modes, but MOST of them do not work.
Ground war maps, DMZ maps and Warzone Battle royale maps do not work.
Check the list for working retail maps and Gunfight Maps.
https://www.gamesatlas.com/cod-modern-warfare-2/maps/
https://www.gamesatlas.com/cod-modern-warfare-3/maps/

The issue of MW2 and MW3 erasing each other’s loadouts has been fixed.
Removed the restriction of not being able to change loadout during a splitscreen match for both players.
Increase bot limit to 31 in MW2 on PS4 PRO, on the other model it will be 15.
Repeat following steps to add up 31 bots in MW2 Local Multiplayer:
Enter Local Multiplayer, create local game, choose a mode, check if you could add up to 31 bots at once.
If you could only add up to 7 bots at once, leave the lobby and create local game again, this time it will work.

Sometimes MW3 Local Multiplayer takes more than 20 seconds to load, it appears to be stuck, be patient.
LAN is not tested yet.
No Zombie, no Ground War, no DMZ, no Warzone Battle Royale. Technically impossible.

Enjoy

By CyB1K