Global language settings issue on jailbroken ATV2

Hi everyone!
After jailbraking my ATV2 (6.2.1) with Seasopass, I noticed that in the global language settings, many languages have vanished. One of the consequences is that Netflix won’t display the subtitles in the missing languages. Is there a fix for this issue or I have nothing to do but to restore oringinal Apple FW if I want that Netflix should run corectly, as before?