Ok, i am new to all this jail breaking stuff. I have a jailbroken iphone 3gs that was jail broken with spirit that i done about 3 weeks ago. my question is, with the upcoming ios 4, what should i do with the iphone? Will it still be jail broken when i upgrade to ios 4? Will my phone break if i try to upgrade it when jail broken with spirit? If not can i jail brake it again after upgrading with spirit or another program? Do i need to go back to the firmware i saved from my phone before i jail broke it? Thanks alot.