How to Jailbreak/Unlock iPhone 3GS 3.1 Firmware on Windows

unlock-iphone-3g-2gEarlier this morning I shared a step by step guid on how to Jailbreak and unlock iphone3GS using Pwnage tool 3.1.3 but that was for Mac only as Pwnage Tool doesn’t work on Windows and neither iPhone Dev team have released redsn0w which is a jailbreaking tool for Windows.

However, I would like to share a guide on how to jailbreak iphone 3Gs 3.1 firmware on Windows using Custom Firmware (iPhone2,1_3.1_7C144_Custom_Restore).

How to Jailbreak iPhone 3G Firmware 3.1

  1. First Download the following links of custom iPhone 3.1 Firmware
  2. Now join all the downloaded parts using HJSplit and you will get one archive, uncompress that archive and it contains IPSW file of firmware 3.1
    Custom iPhone 3GS 3.1 Firmware Part 1
    Custom iPhone 3GS 3.1 Firmware Part 2
    Custom iPhone 3GS 3.1 Firmware Part 3
    Custom iPhone 3GS 3.1 Firmware Part 4
  3. Now Install (if you haven’t already) and open iTunes 9
  4. Connect you iPhone to the PC using data cable.
  5. Choose your iPhone from devices menu on left.
  6. Now click “Resotre” while holding Shift key and select the custom IPSW file which you downloaded in step 1
  7. Now Sit back and relax until the installation process complete.
  8. After Jailbreaking your iPhone 3GS to 3.1 Firmware you can follow this guide to unlock you iPhone and use with any SIM/Carrier.
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