If you have any questions, concerns or issues just leave a message in the comments. Step 7: How to boot tethered jailbroken iDevice (iPhone 4, 3GS (New Bootrom), iPod Touch 4G/3G/2G (MC), iPad) after reboot, select “Just boot tethered right now”. This utility is only available for Windows computers, but you can use it on Mac if youre running Windows in a virtual machine. After the process is complete, your device will reboot and you now have a jailbroken iOS 4.2.1 iOS device. Method 1 iOS 8.0 - 8.3 Download Article 1 Download the TaiG jailbreaking utility. Step 6: Now sit back and relax while Redsnow does the thing it does best, jailbreak your iOS Device. Step 5: Follow the on-screen instructions. Note: Make sure your device is both OFF and PLUGGED IN to the computer. You can also select the optional choices if you like (read Step 7 for how to boot tethered iDevice). Step 4: Select “ Install Cydia” and click “ Next“. Step 3: Launch RedSn0w and find your way to iOS 4.2.1 and click “ Open”. Step 2: Upgrade/Restore to iOS 4.2.1 via iTunes 10.1 (iPhone users: iOS 4.2.1 will update your baseband which is NOT unlockable right now). Step 1: Download iOS 4.2.1, 4.2 or 4.1 and RedSn0w from the iJailbreak Downloads Section. Update #4: You can now jailbreak and update your iPhone 3GS, 3G to unlock iOS 4.2.1 on baseband 06.15.00 with RedSn0w 0.9.6b5. Update #3: You can jailbreak iOS 4.2.1 untethered using RedSn0w 0.9.7b4. Update #2: iOS 4.2.1 GM is now available and can also be jailbroken with RedSn0w. Update #1: iOS 4.2 GM was released to developers this week and it seems like it can be jailbroken with the current version of RedSnow. Redsn0w brings tethered jailbreak for the following iDevices: Redsn0w brings untethered jailbreak for the following iDevices: Use PwnageTool. This also requires the new version of iTunes 10.1 to install 4.2 (4.2.1). The current baseband cannot be unlocked at this time, and cannot be downgraded. This jailbreak requires you to upgrade your firmware, via iTunes, which upgrades your baseband. WARNING: If you rely on your iPhone to be unlocked, to use it on an unofficial carrier, you should avoid this jailbreak. Update: Now you can jailbreak iOS 4.2.1 untethered with Pwnagetool 4.2 (Mac) and Sn0wbreeze 2.2 (Windows).This is a complete tutorial which will show you how to jailbreak iOS 4.2.1, 4.2, 4.1 on iPhone 4, 3GS, 3G, iPod Touch 4G, 3G, 2G and iPad using RedSn0w. 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 jailbreak using Redsn0w 0.9. iOS 4.2.1 tethered jailbreakĪfter that you can access Cydia, or SSH into the device. Now that Redsn0w 0.9.6B4 to jailbreak iOS 4.2.1 for iPhone 3G & iPod Touch 2G non-mc model is released, you can go ahead and get your iPhone & iPod Touch jailbreaked if you don’t rely on carrier unlock. Download iOS 4.2.1 for iPhone 4, 3GS, 3G, iPad, iPod touch Download Redsn0w 0.9.6b4 for Windows Download Redsn0w 0.9.6b4 for Mac Download iTunes 10. So even a jailbroken device in this category should use Redsn0w again and boot it to the tethered jailbreak mode as shown below. Follow the steps as shown in the video embedded below to jailbreak your iOS device on the latest 4.2.1 firmware. 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. 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. Follow our step by step guide to jailbreak iOS 4.2.1 using Redsn0w.ġ. 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.
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