hey, ok so heres the deal

i just jailbroke my iPhone 3G again sense i was having some issues with Cydia, it would ask me what type of filters i wanted in order to use cydia but every time i tapped on one of the options i was directed back to the home screen, i used respiring to restart my iPhone multiple times and even jailbroke multiple times yet i still get the same. problem. can anyone help?