From dannybest also comes an Internal HDD FIFA 13 EBOOT file which was tested on 3.55 Rogero CFW using the FIFA 13 DUPLEX version BLES01676 (FIFA.13.PS3-DUPLEX).
From the FIFA.13.Eboot.Patch.PS3-DUPLEX PS3 NFO File:
Overwrite the files with the ones in the archive and enjoy !
In rare occasions we noticed, that if you start the game for the first time, and it hangs when loading, quitting back to xmb and simply restarting the game fixes it.
Enjoy This Fine DUPLEX Release
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1. Get the game installer (you know where to get it), install from Install Package Files option.
2. Install the FIX PKG from Install Package Files option.
*Say YES to overwrite the existing folder notice.
3. Copy exdata folder to: /dev_hdd0/home/0000000X/
4. Play the game.
Where 0000000X is the number for your profile (mine was 00000002).
Edited and tested myself.
Creds to EXEtrimall and Juan Nadie for the algo stuff.