does anyone know of any unlock that i can use the phone with a different carier, please let me know i am phoneless right now, also i used the greenpo1s0n to jailbreak but now it wont turn on just sits at the apple screen i have tried to re jailbreak it and reload the software directly from itunes but nothing is working please if anyone knows a fix please let me know thanks

There's no unlock yet for you, sorry. Regarding the jailbreak, use PwnageTool to create a custom 4.3.1 and restore to that. Or, if you have SHSH saved for 4.2.1, restore and use greenpois0n to jailbreak.