iPhone Help jailbreak & unlock 3g & 3gs on 4.2.1

[anonymouz1828]

Hi,

I gave up waiting for dev-team unlock on 5.14 bb and decided to unlock using bb 06.15.00. I spent 3 days looking for 4.2.1 jailbreak & unlock and still confused. I have two laptop (xp and vista 64) and att sim card.

3G: It is old bootrom and unlocked on 3.1.3. I want to unlock and jailbreak on 4.2.1 - I need snowbreeze and iOS 4.2.1 to build a custom ipsw right??

3GS: It is new bootrom and jailbreak & locked 4.1. I want to unlock and jailbreak on 4.2.1. I have no clue for this one.

Thanks.

 

[anonymouz1828]

is redsnow 0.9.6b5 compartible with vista 64bit??

Can i jailbreak and unlock 4.2.1 on 3gs or apple is not signing 4.2.1??

 

[eastercat]

You need your blobs to install 4.2.1.

is redsnow 0.9.6b5 compartible with vista 64bit??

Can i jailbreak and unlock 4.2.1 on 3gs or apple is not signing 4.2.1??