Updating a jailbroken iphone
More to the point, most i OS software updates modify your hardware’s baseband version, which means if you’re dependent on your jailbreak for an unlock, you will lose your unlock when you finally do upgrade.
One way of potentially restoring your unlock is to save your SHSH blobs, which is what is used to authenticate your i Phone with Apple.
Here’s how to remove your jailbreak and restore stock i OS to your i Phone, i Pad or i Pod Touch.
Your reasons for restoring will vary, but one reason people often choose to get rid of their jailbreak is to install the latest (not yet jailbroken) version of i OS.
4) Without letting go of the power button, press and hold the home button for 10 secs.
For most, that option simply won’t work and others have reported experiencing battery life problems and activation issues when updating on top of a jailbreak.Important: For this reason, you shouldn’t upgrade the software on your phone or restoring to stock if you depend on your jailbreak for an unlock.