Help me to unlock iphone4 4.1

[b1loveu]

Dear iphone 4 users,
I would like to ask you, how can I jailbreak and unlock iphone 4, 4.1?

How everyone of you can solve it.

Thank you in advance

 

[Gregoris]

what baseband are you on?

 

[bab2010]

if you are on the right baseband, you can jailbreak and use ultrasnow to unlock it, if you are on a baseband which is not supported by ultrasnow then you are going to use other methods like Gevey Sim etc...