Some good news for all of you who are anxiously waiting for unlocking their iPhone 4 on baseband 02.10.04, 03.10.01, and 04.10.01. The most vocal member of iPhone Dev Team MuscleNerd is confirming that they should be able to brute-force crack the unique 40-bit NCK key on the device by next weekend, which can then be used to unlock the iPhone 4 permanently. What is NCK-key cracking and how does it work? The NCK-key is generated by Apple if you’d lke to unlock your iPhone officially. This “NCK-unlock” method was initially developed by GeoHot while working on the iPhone 2G unlock that could “crack” the 15 digits long unique key easily. GeoHot’s NCKBF program could do about 100,000 keys per second.Now with this exploit in hand, iOS hackers can’t unlock your baseband, but they can capture more info from the baseband to speed up this cracking process. Since the NORID and CHIPID (unique for every device) are known, you apparntly only have to check 40 more bits (5 digits). A 40 bit key is theoretically crackable on “home hardware” within a week (24/7). The downside of this approach is that you will have to keep your computer turned on, and your iPhone has to be connected – the reason why most people don’t try it. When we mentioned, “here by next weekend” it doesn’t necessarily mean that you will get an iPhone 4 unlock by next weekend. It would just be a confirmation whether the exploit the iOS hackers are working on can be used to unlock the iPhone 4 permanently or not. If they are able to crack the 40-bit unique NCK key of the device, there is a high chance that your iPhone 4 will be unlocked permanently. The new exploit comes from the iPhone Dev Team, after failing to deliver the promised unlock for the iPhone 4. As always, we will keep you updated as more information comes in so you can stay tuned by following us on Twitter and/or subscribing to our RSS feed. Authors:

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