Great now we know that your game is for the US and this OF will work with it.
Lets go step by step.
1. You have to Save the OF in a USB Drive or Memory in a folder that will be named PS3 inside that folder you will put another folder calles SAVEDATA, there you will Save the OF and jerseys, ok?
2. Erase your previous OF from the PS3 memory and IF you don't have a problem the System File Data too, just in case.
3.Next step put you USB drive in the PS3 and go to GAME in the folder that says SAVED GAME DATA or something like that, sorry but I'm at work and can not check the correct name, but it should be just over the Game Disc Icon in the PS3 interfase.
Great now we know that your game is for the US and this OF will work with it.
Lets go step by step.
1. You have to Save the OF in a USB Drive or Memory in a folder that will be named PS3 inside that folder you will put another folder calles SAVEDATA, there you will Save the OF and jerseys, ok?
2. Erase your previous OF from the PS3 memory and IF you don't have a problem the System File Data too, just in case.
3.Next step put you USB drive in the PS3 and go to GAME in the folder that says SAVED GAME DATA or something like that, sorry but I'm at work and can not check the correct name, but it should be just over the Game Disc Icon in the PS3 interfase.
4. Onces in that folder of the SAVED GAME DATA or where you store all your Replays and OF, enter in the USB Drive icon, and you should see all the info for the game, the OF the System Data File, jerseys. There just select the OF and press the Triangle and chose the COPY option.
5. COPY the OF and the jerseys you need, don't copy the System Data File.
6. Enter the game and you should All the Editions that Mrgametight did, like the uniforms, name of the teams, player names.
NOTE: just as a recomendation put English has the Language for the game, at leats until you check the info.
Hope this helps you, and please let us know the result.