Apple recently released the new iPhone OS 3.1 beta firmware and SDK to developers. If you’re using the ultrasn0w software unlock, DO NOT UPGRADE to iPhone OS 3.1 beta because you may permanently lose your unlock. Apple has updated the baseband to 05.08.01. Remember, even when the final iPhone 3.1 firmware is released you should not update if you want to keep your ultrasn0w unlock. Don’t say we didn’t warn you!
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