How to unlock iPhone with firmware 4.1

[Cory Erickson]

Okay so I am unsure if this thread is on here or not, and if it is please send me to that one so I can get help so here it goes. Oh just so you know I'm not too familiar with phones.

I just got an Apple iPhone from my Uncle and he uses AT&T and I went there but they want me to do a $500 security deposit because I have no credit and I refuse to do that so I thought it would be best to go and jailbreak and/or unlock the phone to use it with T-mobile or someone else. So here is my question I looked on the phone and it said the version is 4.1 so I'm assuming that's the firmware, and I looked online on how to unlock it, and it seems people prefer redsn0w. I have redsn0w 0.9.6rc16 and I would like step by step instructions on how to unlock it, and if I need to jailbreak it first please send me a link that has instructions on how to do that as well, also I do not have a sim card if that matters at all. I am doing this so I am not in the hole for $500 because I believe that is a ridiculous amount to pay for just a security deposit for a phone. So if you can please help me I would greatly appreciate it.

Thanks in advance.

 

[Europa]

Is this a 3GS or an iPhone 4?

 

[Cory Erickson]

Is this a 3GS or an iPhone 4?

forgot to mention it's just an iPhone 3g

 

[Europa]

If it was on 4.0.2 or earlier you could just jailbreak and unlock with ultrasn0w. Since it's on 4.1, you'll need to install the iPad baseband before using ultrasn0w or use a GEVEY SIM unlock.

http://www.redmondpie.com/how-to-update-iphone-3gs-3g-baseband-to-06.15.00-with-redsn0w-0.9.6b5-for-ios-4.2.1-unlock/

 

[Cory Erickson]

If it was on 4.0.2 or earlier you could just jailbreak and unlock with ultrasn0w. Since it's on 4.1, you'll need to install the iPad baseband before using ultrasn0w or use a GEVEY SIM unlock.

http://www.redmondpie.com/how-to-update-iphone-3gs-3g-baseband-to-06.15.00-with-redsn0w-0.9.6b5-for-ios-4.2.1-unlock/

okay so i now have it jailbroken but i am unable to use cydia because my iPhone can't find any wifi networks and i don't know why, i have a linksys wireless g router, is it because of the router I'm using or is it because i have no sim card? and if it's because of the router can you tell me of a place i can go to and connect to the internet in order to get ultrasn0w downloaded on my iPhone to unlock it please

 

[Cory Erickson]

I now have it working, it's completely unlocked thank you for the guide

 

[fijiman]

I hope your aware of the draw backs of of unlocking using the iPad baseband....