Unlock iPhone 4 and iPhone 3GS on iOS 4.3.1 Using Ultrasn0w Fixer

[dev10051981]

As we all know It was not possible to unlock iPhone 4 and iPhone 3GS using Ultrasn0w after untethered iOS 4.3.1 jailbreak.The issue has been fixed and released as Ultrasn0w 4.3.1 fixer.

Note:

• Ultrasn0w unlock is supported by Sn0wbreeze 2.4b1 for following basebands.

• Baseband 01.59.00 (iPhone 4)
• Baseband 04.26.08 (iPhone 3GS)
• Baseband 05.11.07 (iPhone 3GS)
• Baseband 05.12.01 (iPhone 3GS)
• Baseband 05.13.04 (iPhone 3GS)
• Baseband 06.15.00 (iPhone 3GS)

• iPhone 3GS baseband will be upgraded to iPad baseband 06.15.00 after that only iPhone 3GS can be unlocked.By upgrading to baseband 06.15.00 you might lose your GPS feature.

• You need to have a jailbroken iOS 4.3.1 device.

Steps 1: Launch Cydia on your jailbroken iPhone 4 or iPhone 3GS on iOS 4.3.1.
Steps 2: Tap on Manage tab at the bottom of the screen.
Steps 3: Select Sources from opened Manage window.

Steps 4: Select Edit and then select Add.
Steps 5: Type repo as Cydia.pushfix.info

Steps 6: Tap on Add Source.Once the source has been added by Cydia then Tap on Return to Cydia button.
Steps 7: As soon as the installation is completed please search for "Ultrasn0w fixer for 4.3.1" in Cydia and install it.

It will automatically unlock your iPhone 4 or iPhone 3GS on iOS 4.3.1 running following basebnds

• Baseband 01.59.00 (iPhone 4)
• Baseband 04.26.08 (iPhone 3GS)
• Baseband 05.11.07 (iPhone 3GS)
• Baseband 05.12.01 (iPhone 3GS)
• Baseband 05.13.04 (iPhone 3GS)
• Baseband 06.15.00 (iPhone 3GS)

Steps By Steps Guide - Unlock iPhone 4 and iPhone 3GS on iOS 4.3.1 Using Ultrasn0w Fixer | Unique Destination for anything Apple, and GizmOs

[cutter7]

I've just tried this on my 3gs with 4.3.1 -Firmware 06.15.00 and works great!!!

Many thanks guys.. xx.

[roneraven]

didnt work for me

[lavkesh]

Another guide... pretty exhaustive this one
Unlock iPhone 4 & iPhone 3GS On iOS 4.3.1 With Ultrasn0w Fixer [Guide] | how2i.com

[tezza82]

Didn't work for me either???

[mitchk]

This sort of works for me... I have really bad reception (1 bar), but it "works" and the other ultrasnow fixer (the one from the djayb6 rep) didn't at all.

[dread33]

same here i only have 1 bar but the question is does it realy wok with the 1 bar? Can i receive any txt message from any1

[Naseeh]

would it be possible to upgrade the iPhone 4's baseband to 6.15 using the latest version of Redsn0w and then unlock it, just like a 3G or 3GS?

[Simon]

would it be possible to upgrade the iPhone 4's baseband to 6.15 using the latest version of Redsn0w and then unlock it, just like a 3G or 3GS?

No, that does not work on iPhone 4.

[Peasey]

Ive tried to install the ultrafixer but this is the message i get. the requested modifications cannot be applied due to required dependencies or conflicts that can not be automatically found or fixed. Help

[Simon]

You dont need ultrasnow fixer anymore. Ultrasnow was officially updated to to fix the issues.

[Peasey]

Ok but when i put my T Mobile sim in i get no service. Whats the cause of this?

[Simon]

What is your baseband?

[Peasey]

6.15.00 Jail broke via redsn0w rc12.

[Simon]

Make sure 3G is off and try rebooting.

[Peasey]

3g is off. I have rebooted this thing a dozen times with no change

[Simon]

You dont still have the ultrasnow fixer installed do you?

[Peasey]

No it wont let me install it.

[Simon]

Try reinstalling ultrasnow

[Peasey]

ok ill try that again. i have re jail broke this thing like 1o times. whats 1 more time with ultrasn0w

Ok i feel really really really stupid. the antenna was disconnected in the phone. Thank you all so much for the help. boy do i feel retarded.