Available Firmware：iPhone brick with 04.03.13_G of Modem and 3.9 of bootloader

Hacking Procedure：Downgrade to 1.1.1 firmware and activate → Install restoring software and repair → Reactivate 1.1.1 firmware and hack

Tools：Windows system、dataline、1.1.1 firmware、1.1.2 firmware、iTunes、Installer

Attention：If your bootlaoader is bootloader 3.9，but upgraded to 1.1.3 firmware carelessly. Then you can downgrade Modem with this tutorial and hack your phone with anysim. (If you don't know how to check bootloader, then you can activate 1.1.1 firmware and click here to install bbinfo to check)

1.1.1 firmware download

Page 1      Downgrade iPhone to 1.1.1 Firmware

Page 2      Jailbreak and activate iPhone of 1.1.1 firmware

Page 3       Repair iPhone

一. Downgrade iPhone to 1.1.1 firmware

　　1. If your iPhone is version 1.1.2, please first download firmware 1.1.1 and connect your iphone with your computer. After connection, close your iphone. Then press "Home" and "boot-strap" key at the same time for 10 seconds. Afterwards release "boot-strap" key and press "Home" until iTunes hints you that you should put your iphone under restoring mode. (Black screen restoring).

　　2.Press "Shift" and click "Restore" with mouse. Find and choose firmware 1.1.1 you downloaded in the hop-up window. Clcik "confirm", iTunes will begin to restore your iPhone.

　　3.After finishing restore, iTunes may give you a hint "1015" mistake. Don't worry, this means that you have successfully downgraded your iphone to 1.1.1 firmware. Now close iTunes.

　　Attention：If your iphone is version 1.1.3, please use the above method to downgrade your phone to 1.1.2 firmware, then downgrade it to 1.1.1 firmware.

1.1.2 firmware download

　　Friedly Note: Although the version is downgraded to 1.1.1, modem is still 04.03.13_G of 1.1.2 firmware.

　　4. Download iBus or iBrickr and operate it. At this time, iBus or iBrickr will appear a picture which hints you to downgrade, click "introduce your iPhone". If your screen of your iPhone shows red. Don't worry, after a few seconds, the screen of your iPhone will enter the activating picture.

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