You would probably have noticed that whenever you update your iPhone 4 or 3GS its Baseband also gets updated, which then make it difficult for you to unlock it and again use it as a normal iPhone, otherwise you will just have to use it as iPod. Today, i will guide you how to update/upgrade your iPhone 4 and 3GS without upgrading the Baseband. This tutorial actually guides to preserve your iPhone Baseband while you just update your iOS firmware.
- iPhone 4 or iPhone 3GS
- Download Redsn0w Here
- Download your desire iOS version
How to Update your iPhone 4/3GS without updating Baseband
STEP 1: Once you download Redsn0w and your desire iOS IPSW file, you are ready to go.
STEP 2: Now connect your device to your PC and Launch the Redsn0w Application.
STEP 3: Now click on “Extras” Button.
STEP 11: Once your device is in DFU Mode, Redsn0w will detect your iPhone 4 or 3GS and Exploiting with Limera1n. Here you need to have some patience while Redsn0w do all the processing for you. Once the Restore is completed, Redsn0w will give you a successful message.