Help with jailbreaking and Cydia for iPhones, iPads, and iPod touches.

Pangu provides an iOS 9.0 untethered jailbreak. TaiG provides an iOS 8.4 and 8.3 untethered jailbreak.
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You can use Cydia Impactor if you need to un-jailbreak an 8.1-8.4 device without restoring.
Instructions for jailbreaking iOS 8.0-8.4.
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How to fix some mysterious problems.

I have 4.2.1 and sim locked iPhone 4. When i try JB with Redsn0w (tethered) this activation screen is not seen.

But i restored my phone for jailbreak with GP, and Jailbroken with GP. (windows)

Everyting is going fine, GP said Jailbreak Complete, and i clicked Quit.

But my phone is not opening. when i try open my phone;

I cant pass the Activation screen.

What can i do?

asked 06 Feb '11, 04:22

fm0na's gravatar image


What do you mean with activation screen? On iPhone or in iTunes? On iPhone the Apple logo or the lock screen? If you restored your device to 4.2.1 without baseband protection and had 4.0.2 or lower installed, then you updated your baseband. This means you cannot unlock your device. To activate it, you need the original SIM anyway. Insert that (or from a friend) to activate your iPhone. Then check modem version. If it's higher than 1.59.00, you cannot unlock and need to wait for a new ultrasn0w release.


answered 06 Feb '11, 04:38

http's gravatar image

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Asked: 06 Feb '11, 04:22

Seen: 930 times

Last updated: 06 Feb '11, 04:38

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