Unlock iPhone 4 on iOS 4.2.1 / 1.59.00 Baseband after Jailbreak with Greenpois0n RC5 [How to Guide]

Now you can update your iPhone 4 to iOS 4.2.1 with preserving 1.59.00 baseband, which means that you will be able to unlock your iPhone 4 with ultrasn0w 1.2. Let’s check out the full step by step guide after the jump

STEP 1: Download TinyUmbrella from here.

STEP 2: Open TinyUmbrella then click on “Start TSS Server”

STEP 3: Open iTunes.

STEP 4: Now, Click on “Restore” NOT “Update”

STEP 5: Now you will get “Error 1013” which means that your baseband has been preserved.

STEP 6: Exit iTunes.

STEP 7: Now you have to jailbreak your iPhone 4 with the Greenpois0n RC5, follow our guide posted here.

STEP 8: Finally you can unlock your iPhone 4 running baseband 1.59.00 using Ultrasn0w 1.2, follow our guide posted here.

Note: this guide is only work with iPhone 4.

About ipodrohan

Rohan Sood, I am 14 years old. I am all about Technology and Gadgets! I am currently at New Delhi, India. Future plans are going to USA and working at one of the awesomest companies APPLE Inc. As you might know, “TECHNOLOGY” is present everywhere. Let’s together understand this word and make the World a better place. I believe in “Sharing KNOWLEDGE”. I created this Blog to share as much Knowledge as possible. I hope you find my Blog interesting and self-sufficient. I will keep you UP-TO-DATE about the Technology News around the Globe!

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Posted on February 5, 2011, in Gadgets, iDevice Related, Information, Jailbreak and Unlock Tutorials, Tutorials and tagged 1.59.00 baseband, 1.59.00 bb, after jailbreaking, greenpois0n rc5, how to guide, iOS 4.2.1, on, Unlock iPhone 4, with. Bookmark the permalink. 2 Comments.