How to Unlock Sim with Redsn0w 0.9.12b2 custom Firmware iOS 5.1.1

 Unlock Sim
All users of Unlock SIM must create a custom firmware for IOS 5.1.1
Everyone who has a SIM Unlock needed was not easy to update via iTunes on iOS 5.1.1, as this also gets an update the baseband and thus disappear are still ways for an unlock.
Redsnow offers the possibility of a custom firmware iOS 5.1.1 overspilling so that the baseband remains at the desired version. Was posted after the custom firmware iOS 5.1.1, you can with the jailbreak redsn0w 0.9.12b2 Absinthe 2.0.4 or later and perform the SIM unlock with Ultrasn0w. How do you install a custom firmware on your iPhone with redsn0w 0.9.12b2, you can read our step by step instructions.

Supported devices:
  • iPhone 4
  • iPhone 3G

Required Downloads:

Guide to custom firmware on the iPhone 4 and iPhone 3G
 Unlock Sim with Redsn0w 0.9.12b2
 Unlock Sim with Redsn0w 0.9.12b2 
Step 1: Start RedSn0w 0.9.12, click on "Tools" and then "Custom IPSW".

Step 2: redsn0w asks for the location of the previously downloaded ORIGINAL iOS 5.1.1 ipsw file. Chooses the latter.

Step 3: If you own an iPhone 3G, redsn0w will ask for the bootrom version.

Whether your iPhone 3G has an old or new bootrom, you can find her in the Settings> General> About on your iPhone 3G to navigate. Here the last two digits of the serial number of a role:
  • The same last two digits or less than 35 (3rd digit must be 9, a): old bootrom
  • Last two digits 40-45: old or new bootrom
  • Last two digits is greater than 45: New bootrom

Step 4: Once you have selected the original IPSW created a custom ipsw redsn0w.

Step 5: The generated custom IPSW is located after the completion in the same folder as the original IPSW and is called "NO_BB_". On the iPhone 3G means "OLDROM" old bootrom.

Step 6: Now you need with redsn0w in the "Pwned DFU mode" go to iTunes to restore the "custom firmware". Starts redsn0w, click on "Tools" and then "Pwned DFU".

Step 7: Now you have to carry your iPhone in DFU mode. Click on "Next" and follow the instructions of redsnow:
  • 3 seconds, press power button and hold
  • Now to press the home button and hold for 10 seconds. (Hold power button is pressed)
  • Now the power button is let go, hold it down but the home button for 10 seconds
  • You should see your IOS device in DFU mode and be ready for the jailbreak.
  • Step 8: The iPhone has now switched to the "Pwned DFU mode". Now start iTunes and click while holding down the SHIFT key (Windows) or hold down the ALT - key (Mac) and choose to restore the custom firmware you just created (NO_BB_).

Step 9: Now on iTunes is your custom firmware restore. Now iOS 5.1.1 will be played without the update to the iPhone baseband. Now you can play the jailbreak and then the unlock.

[Download] Untethered Jailbreak iOS 5.1.1 with:

[Instructions] SIM Unlock iOS 5.1.1 with:

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Tags : iPhone 5   Unlock Jailbreak   iOS 5   iPhone to iTunes   HTC   iPad Apple       Motorola Tablet   Jailbreak iPhone 3G   Apple TV 2G    Siri    Redsn0w    Untethered jailbreak
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