Now the ♥♥♥♥ mod tools have been released not long ago and they are only at version 1.0.0 but the mod tools app has an auto-update feature for whenever a new version comes out. Currently you can only port stock and custom maps from CoD4 not mods.

This is the first release of the mod tools, which for now only contains the map builder.
You can download the mod-builder from here https://♥♥♥♥cachep26muba.onion.guide/♥♥♥♥-mod-builder/♥♥♥♥-mod-builder.exe ( mirror: https://files.catbox.moe/r48hrh.7z )
Place it anywhere you want, run it and configure your MW2 and COD4 directories.
It will install the iw3 export tool into the COD4 directory. In case this fails, you can download the tool from here: https://files.catbox.moe/ils478.7z
You can then follow the Wiki to build your custom maps ( https://♥♥♥♥cachep26muba.onion.rip/wiki/mods/map.html ) or ask modders and testers to help you.
Note: The iw3 tools are not compatible with COD4x!

Credit Snake

Step 1: Open the Mod Builder Tool and make sure you have configured the paths to your CoD4 game and your ♥♥♥♥ game as it says above.
Step 2: Then once you've done that step click "Build Map" then it should show you all your custom and vanilla CoD4 maps.
Step 3: Whichever map you want, custom or not, click it and then press "Export COD4 Map"
Step 4: After that process is done then click "Build MW2 Map"
Step 5: Then after that has done building your map open your ♥♥♥♥ client and run the mod whcih will have the name of your map (mp_mapname)
Step 6: Once you've launched the mod of your custom map open your console by using the ~ (tilde) button and type /map mp_mapname (whatever your map is called) or if you want cheats enabled type /devmap mp_mapname.

Video of Porting Showdown:
https://www.youtube.com/watch?v=e9kim4XzbAw Credit CloneCommOmar

Video of Showcasing Some Maps:
https://www.youtube.com/watch?v=x2jyvTqRwkw Credit Dss0 (Dv4L)

- Conkley