Jailbreak the term is an operation to crack the phone to install any application on it. This operation can be considered as risky, so we must back up all data before you start (contacts, photos, notes, calendar ...).
IPhone backup
To save all settings of your iPhone, just launch iTunes and connect your phone via USB cable. When it is detected, right click on the icon of the iPhone in the left menu of iTunes and select "Save". Note that this backup method is far from infallible. I've had problems in the past with corrupted backups, impossible to restore it later. Counsel, in addition manually save all you can (photos, contact lists, settings ...).
Jailbreak iPhone
To ensure a good Jailbreak, I very strongly advise you to reinstall the original firmware of the iPhone, to have a phone with a new system without any installed application or other personal settings. This will avoid any kind of problems when handling. To do this, simply click the "Restore" button on the homepage of the iPhone in iTunes.
- Download the latest version of QuickPwn for Windows QuickPwn-225-2.zip
- Download the latest firmware for iPhone 3G (version 2.2): iPhone1, 2_2.2_5G77_Restore.ipsw
- Connect your iPhone to your PC via USB cable
- Run the software QuickPwn
- This will automatically detect your phone and firmware version used. Click the Browse button and select the firmware file (the file with the extension. Ipsw) you downloaded earlier.
- Select the options you want. You should know that the software can Cydia and Installer to Jailbreak applications thereafter. It is therefore logical to activate them. The option "Replace Boot Loader" allows it to display on a pineapple instead of apple at startup of the iPhone, this option was therefore useless.
- The software QuickPwn will ask you to take the iPhone into DFU mode. It will therefore follow the steps listed on the screen in the display order. Once this is done, your iPhone should display multiple screens with a pineapple and a bar indicating that the Jailbreak download is under progress.
- Your Jailbroken iPhone is finally. The system should reboot automatically (you must wait several minutes) and you can then use Cydia to install any application.
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