iOS hacker iH8Sn0w has recently released Sn0wbreeze 2.3b1 for jailbreaking iOS 4.3 on all iOS devices except the iPad 2. The jailbreak is a tethered jailbreak which will require you to boot your device via iBooty on all compatible devices except for the iPhone 3GS (with old bootrom). Those of you who saved SHSH Blobs earlier can now play around with it if you are interested. Follow the guide below if you are interested: Quick Note: ASLR in iOS 4.3 breaks Mobilesubstrate, which means that jailbreak tweaks like winterboard, sbsettings, bitesms, folder enchancer, Fice Icon Dock, and many more will not work. Also – if your device is not mentioned in the requirements below, your device is not compatible with this jailbreak. Requirements: How To Jailbreak iOS 4.3 On iPad, iPhone 4, 3GS, iPod Touch With Sn0wbreeze 2.3b1: Step 1: Launch Sn0wbreeze and connect your iOS device to your PC via USB. (Windows Vista and Windows 7 users must start the application in Adminstrator mode. To do this, click the righ tmouse button on the icon and select “Run as administrator.”) You will see the following screen: Step 2: Now you will have an option to select the firmware. Select “Browse” an directly drag and drop your downloaded iOS firmware file as shown in the screenshot below.Here we have an option to select the firmware. Select “Browse” directly drag-and-drop your iOS firmware file as shown in screenshot below: Step 3: The application at this point will automatically detect the device which is required to be jailbroken. In this specific case, we have selected the iPhone 4 IPSW. Sn0wbreeze will check if the firmware selected is correct. Once the 4.3 IPSW is verified, click the blue arrow button to continue Step 4: You will now be prompted to select one of three modes: “Simple Mode”, “Expert Mode”, or “Baseband Preservation Mode.” As Ultrasn0w is broken on iOS 4.3, we will continue by selecting “Simple Mode” as shown in the screenshot below. This will add Cydia, afc2, and other recommended tweaks automatically. Baseband Protection Mode: This preserves your iPhone’s baseband without Jailbreaking or unlocking your device. However, the other two modes “Simple Mode” or “Expert Mode” save iPhone baseband as well jailbreaking your device. Expert Mode: This provides customizing options during the jailbreak process such as installing custom boot logos, root partition size, installer options, and unlocks. Step 5: You will now be shown the following screen: If you have an iPhone 4 (factory unlocked) or are on an officially supported carrier like AT&T, do not select the “Activate My iPhone” option. If you want to play PacMan during this process, you may do so by clicking the “Go To PacMan” button on the top right. At this point it will start building the jailbroken custom firmware for iOS 4.3. During the process, it will Patch iBSS, ramdisk, etc. Wait until the entire custom IPSW file creation process is completed and you will get the following screen: Now, press ‘OK’ button to follow the onscreen instructions to put your device into restorable state. Step 6: At this point you will be prompted to connect your device and click start when you are ready. Turn off your iOS device, put it in DFU mode, and follow the on-screen instructions: For the DFU mode: Turn off the device while connected to your computer Click the Home + Power button for 10 seconds then release only the power button while continuing to press the Home button. Step 7: Next, open iTunes and you will be shown a warning message which will inform you that you have connected an iPhone in DFU mode. Click OK and go forward. Step 8: Press and hold the Shift key on your keyboard, cthen click the Restore button in iTunes. Step 9: Now, select the custom IPSW that was created and click the Choose button. Wait until iTunes installs the new firmware 4.3 on your iOS device. After the installation is done, your iOS device will restart automatically. You have now successfully jailbreak iOS 4.3. How To Boot iOS device In Tethered Mode: Since this is a tethered jailbreak for iOS 4.3 and no untethered jailbreak solution is currently available, you will have to boot it into a tethered mode using iBooty. iBooty is a Windows based nifty boot tool also from iH8sn0w. Just add a file to your iOS device via SSH and then run iBooty whenever you need to boot into the jailbroken kernal. To do that, follow the steps in the video below: Wait for your iOS device to boot and you are set! Your jailbroken iOS device will then be booted into a tethered mode. Stay tuned for more jailbreak and unlock news regarding your iOS devices by following us on Twitter and/or subscribing to our RSS feed. Authors:

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