Help Please (Quckpwn 2.2 Stuck on apple logo) 3g!!!

Please i been searching on here and i couldn't not find what i am looking for. I have an iphone 3g 2.2 and i used quickpwn 2.2 to jailbreak iphone. seems to go great. it said install was successful but now i am stuck at the black apple screen with the white apple logo it never boots up. It cuts off after like 10 min and restarts to the same thing. any suggestions or explanations. please i need my phone for work