If you want to play on 3.41 you need to install the official Japanese 1.02 Patch [BLJM60273_[UPDATE_01_PS3FW_03.4100]_VER_01.02.pkg], in Multiman (or with FTP) go to /dev_hdd0/game/BLJM60273/USRDIR/SEC, and replace the files there from the original English release. (AG01, AG05, AG10, AG17, AG20 and AG22...)
On 3.55 it should work without the 1.02 Patch, but I haven't tested that, so if you have trouble Install the Patch, replace the files, and Enjoy!
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why would you even need a patch for injustice just update to Rogero 4.40 cfw already geez there is absolutely no point on being on 3.55 at all.. NO POINT, and you would be able to play injustice and everything else, no patches sheesh