My English is not good
MLB2K12 - How to add uniform (add four uniform)
Step 1 Change uniform files name (uniform_syc_xxx, rules=syc team name, Can not be changed) and copy to X:\Program Files\2K Sports\Major League Baseball 2K12
Step 2 Open XXX.FXG or XXX.ROS for Roster Editor (Empty position to increase)
Step 3 Open color.txt change step 1 files name (syc team name and team number, you can not change), 433~436 Empty position number, and save new add.txt
Step 4 Import to add.txt
Step 5 See, successful
Into the game to watch
http://www.youtube.com/watch?v=dd1PeBMsTWE