iOS 5: iPhone Basebands and Unlocks
HITB 2012: MuscleNerd Explains Evolution of iPhone Baseband and Unlocks [VIDEO] IBTimes

Pod2g's "Corona" untethered exploit for iOS 5.0.1 gives a new lease of life for the jailbreak community, as the advent of iOS 5 brought a dead-lock situation for iOS users. Thanks to Pod2g, users can now exploit the seamless potential of untethered jailbreaks on iOS 5.0.1. Although the tethered jailbreak was available right from day one of the new iOS software release (both from Sn0wbreeze and Redsn0w), the worldwide community of jailbreak users yearned for a full-fledged untethered exploit for a seamless experience using third-party apps and tweaks.

Until this new release, Pod2g's exploit only applied to devices running on the A4 chip and even older devices - original iPad, iPhone 4, iPhone 3GS and iPod Touch. As a result, most users clung to iOS 4.3.3 or previous versions to enjoy the freedom of untethered exploits from Comex or the Chronic Dev-Team. However, now those users can join the party with millions of other iOS users exploiting the power of Notification Centre, besides over 200 new features and enhancements, according to RedmondPie.

On the eve of its two-year anniversary, Sn0wbreeze, the popular Windows-only jailbreak utility for designing custom iOS firmware with preserved basebands, gets an update to jailbreak untethered. That is a big respite to free users from the hassles of connecting to the computer and rebooting after every update or every instance of installing a jailbreak tweak.

How to jailbreak iOS 5.0.1 Untethered using Sn0wbreeze 2.9.3 (Windows)

What you need:

  • A supported device running iOS 5.0.1 [download link for iOS 5.0.1]
  • The latest version of Sn0wbreeze (version 2.9.3) [download].

Step 1: Once you have downloaded the necessary iOS 5.0.1 IPSW tool, launch Sn0wbreeze. Click the blue arrow at the bottom right of the screen.

Step 2: Locate the downloaded IPSW file for your iOS device and hit that blue arrow once again.

Step 3: Sn0wbreeze will now display your device's details on a verification screen. Click the blue arrow, again.

Step 4: Now, if you're planning to preserve your iPhone's baseband for Gevey SIM or Ultrasn0w unlock, opt for Expert Mode. Hit the arrow once again.

Step 5: On the next screen, select Build IPSWand click on the blue arrow once again.

Sn0wbreeze will then decodethe iOS 5.0.1 IPSW file. It may take a while, but you will be notified when the process is done.

Step 6: Connect your device and click OK, then follow the steps to set your device into DFU mode. If done correctly, you'll receive a confirmation prompt.

Step 7: Open iTunes, select your device in the list view, and while holding down the leftShift key on your keyboard, hit the Restorebutton, which will allow you to navigate to your custom firmware file which you created via Sn0wbreeze.

Booting the Device into a Tethered State Using iBooty

With the process complete, we now need to focus on how to boot tethered.

Step 1: Launch the iBooty utility and choose the relevant device from the drop down list before hitting the "Start" option.

Step 2: Once the process starts, iBooty requires DFU mode to work, which can be achieved by following on-screen prompts

Step 3: iBooty will now boot the device into a tethered jailbreak state. When completed, it will present the user with a completion message. This ends the jailbreak process.

How to jailbreak iOS 5.0.1 Untethered using PwnageTool for Mac

Those of you wondering, if there is a way to employ iOS 5.0.1 untethered jailbreaks on Mac systems will need to download the PwnageTool, which is the Mac-based cousin of Sn0wbreeze.

Step1: Download the latest version of PwnageTool from here.

Step2: Select iOS 5.0.1 IPSW from the list when prompted.

Step3: Follow onscreen instructions to create the custom firmware, which you can restore to later using iTunes. This ends the jailbreak process.

If you are looking to unlock your device for multiple carriers, most of the newer basebands are tough nuts to crack. So, an ideal solution is to preserve the older basebands in order to use your iOS devices with unauthorised carriers. Nevertheless, users who want to unlock their device on older basebands can do so using Ultrasn0w 1.2.5 posted here.

MUST READ: iOS 5.1 Untethered Jailbreak: New Status Update for iPhone 4S, iPad 2 and New iPad from Pod2g and Chpwn

MUST READ: iOS 5.1 Untethered Jailbreak: Redsn0w, WebProNews and Softpedia Confirm "EasyRa1n RC5" Jailbreak for iPhone 4/4S as Total Fake

MUST READ: iOS 5.0.1 Untethered Jailbreak: How to Unlock iPhone 4/3GS Using Ultrasn0w 1.2.5 [GUIDE]