English:
1. Open OpenIV
2. Go to GTA V/x64v.rpf/models/cdimages/streamedpeds_players.rpf/player_one
3. Extract file from this zip to a folder
4. Make sure to enable edit mode.
5. Replace the file with the Gremio Tee Shirt
6. Enjoy

Portuguese:
1. Abra o OpenIV
2. Va para GTA V/x64v.rpf/models/cdimages/streamedpeds_players.rpf/player_one
3. Extraia o arquivo.
4. Tenha certeza que esta no "Edit Mode".
5. Substitua esse arquivo pelo o uniforme do grêmio.
6. Divirta-se