*As usual a big thanks to the iPhone Dev-Team for their hard work and contribution to the iPhone community. To use Redsn0w to help you boot back into your jailbroken device simply select Just boot tethered right now from the options window and click Next. When your iPad finishes rebooting (5 minutes or so) it will be jailbroken with Cydia on the SpringBoard. Once this is complete you will be notified that RedSn0w is done. RedSn0w will then begin uploading the new RAM Disk and Kernel. Release the Power button and continue holding the Home button until RedSn0w detects the device. Hold down both the Home button and the Power button for 10 seconds. You can find more help with DFU mode here Step 1 Download iOS 4.2.1 Download RedSn0w 0.9.6b4 for Windows Mirror 1 Mirror 2 Download RedSn0w 0.9.6b4 for Mac Mirror 1 Mirror 2 Download iTunes 10. RedSn0w will now guide you through the steps to get into DFU mode. Please plug your iPad into the computer and make sure its OFF then click the Next button Make sure Cydia is selected and click the Next button to continue. RedSn0w will now prepare the jailbreak dataįrom this window you can select the jailbreak options you would like. Once the firmware has been verified click the Next button to continue. Select the 4.2.1 firmware ipsw we placed in the Pwnage folder on our desktop then click Open. Once RedSn0w opens click the Browse button Once iTunes has finished updating your iPad to the desired firmware open the Pwnage folder on your desktop and launch the redsn0w application from the redsn0w folder we extracted earlier. Navigate to the Pwnage folder on your desktop and select the 4.2.1 firmware ipsw. Restore is preferred as it won't create any wasted space on your iPad. Now hold down Shift and click the Restore button. Select your iPad from the list of devices on the left. Likewise, download the latest 4.2.1 firmware from below and place it in the same folder.Įxtract the redsn0w executable from the RedSn0w zip file into the same folder.Ĭonnect your iPad to the computer and launch iTunes. Update: Now you can jailbreak iOS 4.2.1 untethered with Pwnagetool 4.2 (Mac) and Sn0wbreeze 2.2 (Windows).Download RedSn0w from here and place it in the Pwnage folder. We can expect a full, un-tethered iOS 4.2.1 jailbreak, and an Ultrasn0w unlock very soon. A non boot-tethered device will show a Grey or White Cydia icon instead of the bright one. iOS 4.2.1 tethered jailbreakĪfter that you can access Cydia, or SSH into the device. So even a jailbroken device in this category should use Redsn0w again and boot it to the tethered jailbreak mode as shown below. As said earlier, Redsn0w 0.9.6 b4 is a tethered jailbreak for iPhone 4, iPhone 3G S ( new model), iPad, iPod Touch 4G, 3G, 2G (MC) and iPad. Cydia should be there in your Springboard.ĩ. If your are on an iPhone 3G, iPhone 3G S ( old iBoot ROM) or iPod Touch 2G ( model not starting with MC), steps to your untethered iOS 4.2.1 jailbreak completes here. Redsn0w 0.9.6 b4 will now install iOS 4.2.1 jailbreak files in your iPhone, iPod Touch or iPad using the Limera1n exploit.Ĩ. Just follow the steps given in the Redsn0w 0.9.6 b4 UI, if you are not sure about this.ħ. Jailbreaking your iPhone with the redsn0w tool can free you from the chains of iTunes and the app store, but doing it can sometimes jam or freeze your iPhone. Press Power OFF button and enter into the DFU mode. At this point you need to check Install Cydia option and proceed.Ħ. If you have pointed it to the correct file, it will show something as given above. Open Redsn0w and point it to the downloaded iOS 4.2.1 ipsw file. Download Redsn0w 0.9.6 b4 for Windows or Mac from Hotfile here.ģ. Download iOS 4.2 ipsw corresponding to your iPhone, iPod Touch or iPad here.Ģ. You may want to use Redsn0w beta 0.9.6b6 which addresses a battery drain issue. Next, jailbreak your iPhone running iOS 4.2.1 with Redsn0w using this tutorial. Follow our step by step guide to jailbreak iOS 4.2.1 using Redsn0w.ġ. Step 1: You will need to be already on iOS 4.2.1, so if you have not done so, update your iPhone firmware to iOS 4.2.1 via iTunes update. So until someone releases a complete working untethered jailbreak for iOS 4.2, Redsn0w 0.9.6 b4 is the only option to get Cydia working in your device. However, Redsn0w 0.9.6 b4 support un-tethered jailbreak on iPhone models with old iBoot ROM and in iPod Touch 2G models. So if you are rebooting your jailbroken idevice, you should be near a PC or Mac to take it to the jailbreak mode. It is based on Geohot’s iboot exploit in Limera1n, and is a tethered jailbreak. The new Redsn0w 0.9.6 b4 enables iOS 4.2.1 jailbreak on iPhone, iPod Touch and iPad. The iPhone-Dev team today released an updated version of Redsn0w that can be used to jailbreak iOS 4.2.1. as redsn0w 0.9.6B4 is based on limera1n exploit from Geohot which will continue to work except that it will be tethered jailbreak meaning you have to connect to.
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