here you can download the Modding SDK for TE4 : https://www.managames.com/download.php? ... SDK_v1.zip . (last update : April 2025)
It works like the one for TEM2, except you should use the TE4 Mods folder instead of the TEM2 Mods folder..!

So read all the explanations here : topic11-31376.php .
1 important note though : for TE4, the menu files in "Menu/ScriptTe" are used instead of the ones with the same name in "Menu/Script". TEM2 completely ignores "Menu/ScriptTe" and uses only "Menu/Script".
The outfits are in a separate SDK, to avoid downloading too big files when there are changes in the base SDK.

The animations have their own SDK.

The Stadium & Surface Textures have their own SDK.

Extra notes :
- How to make your Mod downloadable in-game : topic60-34686.php
- Bind your Mod to a Profile, Create a Profile .ini, put saved Training Club Players in your Mod, and flag your Mod as dependent of another Mod : topic60-34687.php
- Sounds modding, including folder-based Grunts, and ambience tracks => topic60-33725.php
- New 2D court & Surface physics modding to make it easier to change the surface physics for many courts at the same time, as well as defining different stadiums for the same tournament => topic60-33904.php
- it's not possible to Mod the 3D models ; ie: the players, the 3D stadiums, the NPCs, etc.
- however, it's possible to edit the NPCs & Props positions, the lights, the ads, board texts, and add any 3D model to the stadiums : topic60-34047.php
- I'll try to do a clearer Modding FAQ once the game is done & its Modding stabilized ; for now, you have to go through the older TE2013 Modding documentation to get some of the basis and thus it can be daunting

- If you have any issues, or before releasing your Mod to the public, look for "error" and "warning" in Settings -> Profiles -> Show Engine Log (on the bottom left), and try to fix them all
- New way to add player photos : topic60-34846.php
- Commentary SDK : topic60-35915.php
- If you want your Mod to be installable on consoles, it should :
- takes less than 800MB of space
- should have a maximum of 6 subfolders, else the Mod will fail to install on the PlayStation (including the Mod folder ; eg: "MySuperMod\Ini\Images.ini uses 2 subfolders)