This GEVEY unlock solution for the iPhone 4 does not require a jailbreak but requires manual configuration. A full plug-and-play unlock method for iOS 4.3.3 is available after jailbreak. Redsn0w is the ONLY supported jailbreak method. We cannot offer phone support for jailbreaking your iPhone, but we'll help you with other installation questions. Refer to our instructions for more details on unlocking your GSM iPhone 4.
This GEVEY unlock solution is recommended for expert users only! Note that we don't offer phone support for preserving previous modem firmware versions on iOS upgrades.
The original GEVEY™ Ultra can unlock your GSM iPhone 4 running iOS 5.1* and earlier and supports modem firmware versions 1.59.00, 2.10.04, 3.10.01, and 4.10.01. If you run iOS 4.1, 4.2, 4.2.1, 4.3, 4.3.1, 4.3.2, or 4.3.3 then the original GEVEY™ Ultra will work for you.
*If you are upgrading to iOS 5.0, 5.0.1 or 5.1 you will need to preserve modem firmware version 4.10.01 when upgrading. Note that we don't offer phone support for preserving previous modem firmware versions on iOS upgrades. This is recommended for expert users only!