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This is the step by step procedure to unlock and Jailbreak the iPhone 2G and 3G versions.
Steps as from the actual Source - http://www.iphonehacks.com
Some important points to note before we start:
- Hacking your iPhone 3G could void its warranty.
- Since one of the important requirements to unlock iPhone 3G is to upgrade to iPhone firmware 2.2 (as it exclusivley works with baseband firmware 02.28.00 which comes bundled with firmware 2.2), you need to be aware that iPhone firmware 2.2 breaks Turbo SIM
(in case you are using it) - the hardware method to unlock iPhone 3G so
if Dev team's software method which is still in beta does not work you
might not be able to use your iPhone 3G.
- This guide is to jailbreak iPhone 3G running iPhone firmware 2.2.
- This guide is for Windows users, Mac users can refer to this step-by-step guide to jailbreak iPhone 3G using QuickPwn (Mac).
Preparatory steps before jailbreaking your iPhone 3G.
- Please take a backup of your iPhone, refer to this post for more details.
- Since Dev team's unlocking solution works exclusively with baseband
firmware 02.28.00, you will need to upgrade your iPhone 3G to iPhone
firmware 2.2 without preserving its baseband. You can check your
firmware and modem firmware(baseband) versions via Settings->General->About and look for Version and Modem Firmware. - Please ensure that you have upgraded iTunes to iTunes 8.0.2.
- Please download QuickPwn for Windows from this link and unzip its contents in a folder.
- Please download firmware 2.2 for iPhone 3G using this link.
- You need to install .Net Framework runtimes and associated
files (if not already installed) for Quickpwn to work. You can download
it from Microsoft's site.
If you want to update your iPhone 3G to firmware 2.2 then you can follow the steps mentioned below ("Update your iPhone 3G to iPhone Firmware 2.2").
You can also follow these instructions if you want to update your iPhone 3G running firmware 2.2 with preserved baseband to firmware 2.2 (5G77) and baseband firmware 02.28.00.
Update your iPhone 3G to iPhone Firmware 2.2:- Connect your iPhone 3G to your computer via USB cable and launch iTunes and select your iPhone.
- Hold the SHIFT key and click the “Restore” button. iTunes will
launch a file dialog for you to select the firmware file. Locate the
iPhone1,2_2.2_5G77_Restore.ipsw file for firmware 2.2 that you have
downloaded in step 5 of the preparatory steps and click “Open”.
- iTunes will then restore your iPhone with firmware 2.2 which takes sometime, please wait for the process to complete.
Once your iPhone 3G is updated to iPhone firmware 2.2, you are ready to use the QuickPwn tool to jailbreak it.
Jailbreak iPhone 3G using QuickPwn:- Launch QuickPwn from the unzipped folder to start jailbreaking your iPhone 3G.
- Please ensure that your iPhone 3G is connected to your computer.
QuickPwn will automatically detect it and enable the blue arrow button,
click it to continue.
- In the next screen, click browse and select the iPhone firmware 2.2
that you had downloaded in step 5 of the preparatory steps and click
Open.
- QuickPwn will check if the firmware file selected is the same as
the one installed on your iPhone 3G, if valid it will enable the blue
arrow button, click it to continue.
- In the next screen, you will be prompted to install Cydia,
Installer (both are preselected) and if you would like to Replace the
Boot Logos. Install both Cydia and Installer as you will need it to
install Dev team's unlock yellowsn0w application and also to install
jailbreak apps.
- QuickPwn will again prompt you to ensure that your iPhone 3G is
connected to your computer via USB, click the blue arrow button to
continue.
- QuickPwn will now automatically put your iPhone into recovery mode.
Once its in recovery mode you will be prompted to: Hold the Home button
for 5 seconds, Hold the Home and Power buttons for 10 seconds, then
release the Power button and continuing holding the Home button until
your iPhone is in DFU mode.
- Its important that you follow the instructions carefully, if it
does not work and get an error message then try again, once your iPhone
3G is in DFU mode QuickPwn will start the jailbreaking process.
- QuickPwn will inform you as soon as the jailbreaking process is successfully completed.
- After your iPhone 3G reboots, it will be jailbroken and will have
Cydia and Installer apps installed and visible on your iPhone's home
screen.
Source - http://www.iphonehacks.com
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