Just now I decided to test the patch on fifa 11 1.01 and yes, like akim mentioned before, problem do happen related to team name, and maybe some added players too, eventhough I have yet to find any.
For now, the only solution would be to install in original fifa.
The best bet for akim or alike to use Switcher by outsider. Patch version would be the original one (fifa11 1.0) + mslpl4fifa11 patch while "The original" fifa would be the original 1.01 official patch version.
EDIT : Now I may found a solution for Akims' problem - team name related problem.
Yes you can use fifa 11 1.01 and it is still working as intended. I don't know if patch 1.01 also updates the locale.big, but so we must extract both eng_us_db.db data0.big and language from locale.big. Here is how.
1. Run DBM11- a must. Click File > extract from .BIG > Main database (to extract database) and again, but this time local databases to extract language to LOC folders. This time you have original eng_us.db
2. Extract my patch in fifa 11 game folder. Make sure it's extracted with folders enable.
3. Run
fifa 11 regenerator 1.3.1 and select the default settings. Click OK
Once finished, you can start FIFA 11 1.01 and play. Now all team name, league name and trophy name will be shown as I intended.
The downside is, you missing all official changes in database by EA once you replace it with my patch. But of course fifa.exe patched to 1.01 will be as it is.