kNow 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.
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{ 2 comments… read them below or add one }
Download Jailbroken Quick Tool 1.6.0 + Patch to 1.6.1
Hi, I’ve a weird problem, itried to update my jailbreak iphone 4.2.1 BB 6.15 but it didnt worked, so i tried to restore my iphone using downloaded firmware 4.2.1 but in the beginning it wouldnt let me, giving me error 1015, but then on using snowbreeze restoring worked.Now im stuck on emmergency calls only…so i would really appreciate your help!