This tutorial will show you show how to update iPhone 4 to iOS 4.2.1 without upgrading your baseband. this method will preserve iPhone 4′s baseband at 1.59.00 so you don’t lose your software unlock using Ultrasn0w in case you don’t have a factory unlocked iPhone.
How to Update iPhone 3g /3gS & iPhone 4 to Custom iOS 4.2.1 Preserving your Baseband Custom ios 1 firmwares: (Browse in Redsn0w 0. Custom ios 6b6) iOS 4.
If you have a factory unlocked iPhone 4 you don’t need to worry about your baseband since your iPhone will always stay unlocked.
Jailbreak for iphone [1] 14 top asked Questions On How To Unlock a Locked iPhone Amazing! Hope this post will clarify some issues you have. Jailbreak for iphone Below are two main reasons why you would want to jailbreak your iPhone: get instant access to a 3rd party app store like Cydia so you can access and download free ringtones, apps , customized backgrounds, games , themes, wallpapers, utilities, toys, software and much more! be able to unlock your iPhone so you can use your iPhone with any wireless carrier! What is the difference between iphone jailbreaking and unlocking? there is a lot of confusion surrounding the jailbreaking and unlocking of an iPhone.
In case you don’t know what your existing firmware version or baseband version is please first read How to Find iPhone Firmware and Baseband Version. Proceed only if you are on iOS version less than 4.2.1 and Baseband version 1.59.00.
Iphone touch new iphone 2011 – GreenPois0n new Jailbreak iOS 4.2.1 Untethered iPhone iPod Touch and iPad ) HOT [Update January 2011] 2. Iphone touch blogspot.
As of present day only the iPhone 4′s at baseband version 1.59.00 are unlockable using Ultrasn0w. if you have any other baseband version this tutorial will not work for you.
Ios tutorial Install and Jailbreak iOS 5 Beta 7 with Out a Developer Account [Tutorial] then iH8sn0w Released his latest versoin of Sn0wbreeze 2. Ios tutorial Check how to install iOS 5 Beta 7 with out a developer account and jailbreak your iDevice on it after the jump.
Tools Required to use this Guide:
Bricked iPhone 3GS Reboot Loop after iOS 5 beta 7 OTA Ios firmware my aging iPhone 3GS — that has been firmware upgraded, jailbroken, and restored innumerable times throughout its 2 year life — was seemingly bricked this morning when I went to upgrade it to iOS 5 beta 7. Ios firmware thank you bitcoin!)My iPhone would reboot constantly, showing the Apple [2] logo, a black screen, a white screen and some vertical lines.
Download these first:
- iOS 4.2.1 Firmware for iPhone 4 – Download here
- TinyUmbrella – Software to preserve baseband
- Greenpois0n to jailbreak iPhone – Download link
Steps to Update iPhone 4 to iOS 4.2.1 Safely:
Connect iPhone 4 to your Mac and launch TinyUmbrella after you install it. Click on Save SHSH.
Click on Start TSS Server and then Launch iTunes
Click on Alt+Restore and point iTunes to the IPSW firmware file you downloaded previously.
iTunes will report Error 1013 after the restoration is over. Don’t panic. it means all is going as intended so far. Jailbreak iPhone 4 using Greenpois0n. The iPhone 4 should be out of Recovery after the jailbreak is done.
Activating iPhone:
The drawback of Greenpois0n is that unlike PwnageTool or other jailbreak tools, it does not support hacktivation. you will have to insert the official SIM card. for example, if phone was purchased in the US, you need to insert an AT&T sim card to activate it the first time. you don’t need official SIM after this.
Install Ultrasn0w from Cydia using this guide and enjoy iOS 4.2.1 on your iPhone 4.
Follow the steps exactly as stated above and your baseband will remain untouched. In case you don’t understand any step feel free to ask via comments.
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How to Update iPhone 4 to iOS 4.2.1 Safely Without Upgrading Baseband
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