How To Jailbreak Your iPhone 2G and iPhone 3G on iOS 3.1.3 using Redsn0w

These are instructions on how to unlock and jailbreak your iPhone 2G & iPhone 3G on iOS 3.1.3 using RedSn0w for Windows & Mac.

This tutorial is specially for those iPhone 3G users who wants to switch back to iOS 3.1.3 due to performance and sluggishness faced on iOS 4 versions. if your Modem Firmware is 06.15.00 then you should restore custom cooked firmware of 3.1.3 & not the original one posted here in this tutorial.

Note for iPhone 2G users : you require Redsn0w, two bootloaders files (BL 3.9 & BL 4.6) and two firmware files (3.1.2 & 3.1.3)

Note for iPhone 3G users : you require Redsn0w, two firmware files (3.1.2 & 3.1.3) and Ultrasn0w package from Cydia.

Please Note that both the version of Redsn0w 0.93 & 0.94 can be used to Jailbreak 3.1.3 Firmware for 2G/3G iPhone but still we will recommend you to use the latest version of Redsn0w.

If you are looking forward to jailbreak & unlock 3.1.2 firmware for iPhone 2G then follow the following tutorials :

-Windows

-Mac

Step One

Create a folder called Pwnage on your desktop.

Download the following files and place them in the Pwnage folder you just created:

-Redsn0w 0.94 (Windows)

-Redsn0w 0.94 (Mac)

- BL 3.9

- BL 4.6

- 3.1.3 (2G): iPhone1,1_3.1.3_7E18_Restore.ipsw

For 3G Users, Download iOS 3.1.3 Firmware from below :

-3.1.3 (3G): iPhone1,2_3.1.3_7E18_Restore.ipsw

Extract the RedSn0w application from the zip file to the Pwnage folder.

Step Two

Connect your iPhone to the computer and launch iTunes.

Select your iPhone from the list of devices on the left. Now hold down shift key on your keyboard and click the Restore button. Mac users should hold option key on their keyboard. Restore is preferred as it won't create any wasted space on your iPhone.

Navigate to the Pwnage folder on your desktop and select the firmware ipsw. Click the Open button to continue.

Step Three

Once iTunes has finished updating your iPhone to the desired firmware you may launch Redsn0w from the Pwnage folder on your desktop.

Step Four

Once RedSn0w opens click the Browse button

Step Five

Select the firmware ipsw we placed in the Pwnage folder on our desktop then click Open

NOTE : Browse & point the original iPhone 3.1.2 firmware to proceed. This is required because redsn0w 0.9.4 can not read or validate iPhone 3.1.3 firmware.

Step Six

Once the firmware has been verified click the Next button to continue

Step Seven

From this window you can select the jailbreak options you would like.

Verbose boot displays detailed information on boot of your device and is generally only needed by developers and advanced users.

Make sure the Cydia and Unlock options are selected. For this tutorial we will also selectCustom boot logo and Custom recovery logo.

When you click to select each custom logo option a dialog window will appear asking you to select the image. Locate the image you would like to use then press the Open button.

*Remember the rules for boot logos are: RGB or Grayscale format with Alpha channel and dimension below 320x480.

Click the Next button to continue

Step Eight

We will know need to set the location of our bootloader files. (applies only for iPhone 2G)

Click Browse and select the 3.9 bootloader file from the Pwnage folder on your desktop.

Click Browse and select the 4.6 bootloader file from the Pwnage folder on your desktop.

Click the Next button to continue.

Step Nine

Please plug your iPhone into the computer and make sure its OFF then click the Next button

Step Ten

RedSn0w will now guide you through the steps to get into DFU mode.

Hold down both the Home button and the Power button for 10 seconds.

Release the Power button and continue holding the Home button until RedSn0w detects the device.

Step Eleven

Your iPhone will now reboot

Step Twelve

RedSn0w will then begin uploading the new RAM Disk and Kernel.

Step Thirteen

Once this is complete you will be notified that RedSn0w is done. Click the Finish button. After your iPhone reboots (5 minutes or so), it will run BootNeuter (applies only for iPhone 2G) then be unlocked and jailbroken with Cydia on the SpringBoard.

*As usual a big thanks to the iPhone Dev-Team for this contribution to the community.