#Redsn0w jailbreak iphone 3g 4.2.1 how to#
#Redsn0w jailbreak iphone 3g 4.2.1 install#
#Redsn0w jailbreak iphone 3g 4.2.1 zip file#
#Redsn0w jailbreak iphone 3g 4.2.1 update#

#Redsn0w jailbreak iphone 3g 4.2.1 how to#

You can also select the optional choices if you like (read Step 7 for how to boot tethered iDevice).

#Redsn0w jailbreak iphone 3g 4.2.1 install#

Step 4: Select “ Install Cydia” and click “ Next“. Step 3: Launch RedSn0w and find your way to iOS 4.2.1 and click “ Open”.

#Redsn0w jailbreak iphone 3g 4.2.1 update#

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. *As usual a big thanks to the iPhone Dev-Team for their hard work and contribution to the iPhone community.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. 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 iPhone 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 RedSn0w will now guide you through the steps to get into DFU mode. Please plug your iPhone 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 iPhone 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 iPhone. Now hold down Option and click the Restore button. Select your iPhone from the list of devices on the left.

#Redsn0w jailbreak iphone 3g 4.2.1 zip file#

Likewise, download the latest 4.2.1 firmware from below and place it in the same folder.Ĥ.2.1 (4): iPhone3,1_4.2.1_8C148_Restore.ipswĮxtract the redsn0w app from the RedSn0w zip file by double clicking it.Ĭonnect your iPhone to the computer and launch iTunes. Create a folder on your desktop called Pwnageĭownload RedSn0w from here and place it in the Pwnage folder.