Jailbreak iPhone 3.1.3 Firmware with redsn0w 0.9.3

NOTE: This guide is for iPhone 2G Only. Jailbroken and unlocked iPhone 3GS, 3G and iPod touch users should NOT upgrade until further instructions.
Follow the simply step by step instructions below to jailbreak and unlock iPhone 2G on 3.1.3 firmware.


Step 1: Update to original iPhone 3.1.3 firmware via iTunes. Downloading and installation instructions for iPhone 3.1.3 firmware can be found here.


Step 2: Start redsn0w 0.9.3 and point it to the original iPhone 3.1.2 firmware to proceed. This is required because redsn0w 0.9.3 can not read or validate iPhone 3.1.3 firmware.


Step 3: Now select both “Install Cydia” and “Unlock” options.


Step 4: Now make sure your device is both OFF and PLUGGED IN to the computer before you click “Next”.
At this stage you will be presented with a screen where you will have to quickly hold “Power” button and then while holding the “Power” button, you will now have to hold “Home” button too. Now after few seconds release “Power” button but keep holding “Home” button until installation begins.


Step 5: Sit back and enjoy while redsn0w will do all the rest for you. Once done, your iPhone 2G will restart automatically and you will find it jailbroken with iPhone firmware version 3.1.3.


Step 6: Once you are done with the jailbreak, you can now unlock your iPhone 2G running jailbroken firmware 3.1.3 by using BootNeuter app from Cydia. Follow the instructions from Step 4 here to unlock iPhone 2G on 3.1.3 firmware.


redsn0w 0.9.4 for Windows [Fast Mirror link] 


Download iPhone OS 3.1.2 for iPhone 2G