Why won't my iphone 3g jailbreak????

[saxslim]

hey everyone. can sumone please help me? i recently updated my 3g to 2.2 thru itunes, and i went thru pwnage tool to make the custom ipsw etc and then i put my iphone in to dfu mode. each time i tried to load the pwned firmware it would pop up with an error message. i dont understand what i did wrong. i've jailbroken my iphone b4, bt now it won't do it at all

[bhz1]

Try to use quickpwn until it puts your phone into DFU mode tehn quit quickpwn and retry restoring the custom firmware in iTunes.

[Zeta22]

Hi, First you have to increase the partition size more than 500 mb (many goes from 600 up to 1200 mb)
Tkase note that if you're a legit user deselect the ACTIVATE PHONE.
Last but no t least if you're using new line of macbook, they'll have problems to recognize the DFU mode.

[preacherzson]

...Take note that if you're a legit user deselect the ACTIVATE PHONE...

What if I'm an AT&T customer but I want to jailbreak and unlock and then bay my iPhone? Do I deselect activate phone?

[chbearsrock]

What if I'm an AT&T customer but I want to jailbreak and unlock and then bay my iPhone? Do I deselect activate phone?

Assuming you're talking about the 2G (since the 3G isn't unlockable) then yeah, you should activate it as well as unlock it before you sell it. But as far as personal use goes...you can uncheck the box and be fine.