Use a tool like File Explorer or CM15/16 (depending on your FIFA version) to "Regenerate BH Files." This tells the game to read the new modded files instead of the original ones. Troubleshooting Common Issues
This is often caused by a roster conflict. Ensure you have moved the "Squads" file from the patch into your Documents > FIFA > 02 folder. Download FIFA Next Season Mega Patch tashee x00 part12 rar
You cannot "open" Part 12 individually. It is a piece of a puzzle. Use a tool like File Explorer or CM15/16
The file should be named exactly FIFA_Next_Season_Mega_Patch_Tashee_x00.part12.rar . Download FIFA Next Season Mega Patch tashee x00 part12 rar
Always copy your original FIFA installation folder before applying a mod.