There are two well used software used to Unlock iPhone 3GS 4.2.1. The two are jailbreak tool and 3G iPhone unlocker. It entails hacking the iPhone so that it can be used on any other cellular carrier apart from the one it is currently running. Jailbreaking, on the other hand, is good old hacking. This type of hacking involves circumventing iPhones security, to install un-endorsed third-party software’s into the iPhone. This is a painstaking practice that calls for a lot of caution, it is however, legal.
What is involved in Unlock iPhone 3GS 4.2.1
The iPhone development team released a new tool to Unlock iPhone 3GS 4.2.1 05.15.04 called Pwnage. This tool has been recommended especially because, unlike other unlocking tools, it updates to the latest firmware while preserving the baseband. This enables the user to enjoy it as they Unlock iPhone 3GS 4.2.1 with ultrasn0w.
Steps to follow to Unlock iPhone 3GS 4.2.1
First, one should download the required files to the desktop in a new folder in which will also contain both the Pwnage tool and firmware. The required files are iOS firmware and the most-recent version of iTunes. Begin by installing the iTunes which helps synchronize the iPhone to one`s computer to provide backup of all files therein.
Secondly, ensure all other programs that were running are closed before running the Pwnage tool by double clicking it from the newly created folder on the desktop. Now move on to the next step, which entails selecting the mode, which is either simple or Expert. The simple option is recommended since it offers gradual steps, and it automatically detects the firmware. In addition, it unlocks and activates the jailbreak with Cydia. The expert mode enables one to adjust the settings on the numerous additions to the custom firmware. It is advisable to go with the Simple mode, which will be used in this article.
Now select iPhone 3GS 4.2.1 Unlocking and click on the blue icon at the bottom to proceed to the subsequent step. The Pwnage tool will automatically establish the suitable firmware. Then it will give one a Yes or No option on the carrier, whether it is official or unofficial. If the answer is yes, one will not need to Unlock Baseband 5.15.04 otherwise check the radio button marked Activate the phone, then click on No. One will begin to enjoy ultrasnow. Next, one will be requested to save the custom “.ipsw” file. This must be saved in the new folder earlier created on the desktop. Now wait for approximately ten minutes, though this is no indication that the IPSW is being built. Input the administrator password then click OK to proceed.
Next connect the Unlocked iPhone 3GS 4.2.1 to the computer once the IPSW completes its build. Once detected, the Pwnage tool wizard guides one through the process of placing the iPhone on DFU mode. Next, hold down both the home and power keys for ten seconds then let go of the ‘ON’ button but do not let go of the home key for an additional ten seconds. The iPhone is now in DFU mode. One will now be requested to run iTunes. One will have to restore the iPhone 3GS 4.2.1 to the files in the firmware. Select the iPhone from the side tool bar in iTunes. Now hold down the Alt key on the keyboard and click restore then release the Alt key. Be careful not to click on either Update or Check for updates button. ITunes will now prompt one to locate the custom firmware from the dialog box being displayed. Use it to navigate to the desktop where the new folder was opened in the beginning of these instructions. Click the choose button once the custom IPSW has been located in order to Carrier Unlock iPhone 3GS 4.2.1.
It will take roughly ten minutes for the firmware to be restored to the iPhone via iTunes. This entails a series of animated steps. One should be patient at this stage and avoid doing anything that would otherwise, jeopardize the process. ITunes will install new 4.2.1 firmware on the iPhone 3GS 4.2.1. A progress bar will emerge on the screen of the iPhone showing the installation process. The iPhone will automatically on completion of installation. Now the process to unlock iPhone 3GS 4.2.1 using the jailbreaking method is complete.
Concluding the Unlock iPhone 3GS 4.2.1 process
Since the jailbreak is complete, one can proceed to unlock iPhone 3GS 4.2.1 running the older baseband by using ultrasnow 1.2. This ultrasnow 1.2 come from Cydia. The steps to accomplish this are:
- Run Cydia on the iPhone
- Click on the Manage tab and pick Sources
- Select Edit then touch on Add, after which one will be requested to input a URL source. Therein put http://repo666.ultrasnow.com then touch on Add source. Automatically, Cydia will update the sources via a sequence of steps.
- On completing installation, search Cydia for unltrasnow and install it one found. The application will Unlock iPhone 3GS 4.2.1 Firmware automatically so that it can be used with any other carrier. Once the iPhone is restarted it will be fully unlocked.
- Once done with all these, embark on restoring all the applications, settings, photos, music and contacts by restoring the backup in iTunes made at the beginning of this process to completely unlock it.
As you can see, there are many steps involved in the unlocking and jailbreaking of your 3GS phone. None of the methods are easy unless you use certified software to do everything for you. For this reason, we strongly recommend to download Unlock iPhone 3GS software to do it automagically for you.