so i got my iphone in september. I Jailbroke it then upgraded to 1.1.1 and jailbroke that using jailbreakme.com then shortly after I was not able to use it as a phone and the speakers will not work for movies or for music. I can use the speakerphone for communication but it is really annoying. Is there anything I can do?

I reinstalled 1.1.1 so now it is back to normal but still doesn't work.