I can't image the pain that some iPhone 4 owners are having to go through just because they updated their basebands to 3.10.01, 2.10.04, 4.10.01 and 1.59.00. As we all know, there is no software based unlock solution out for basebands 3.10.01, 2.10.04, 4.10.01 and 1.59.00 and iPhone 4 units on these basebands are of no use for cellular services. What about some of the other options out there for iPhone 4 baseband 3.10.01, 2.10.04, 4.10.01 and 1.59.00 unlock?
1. Gevey Pro Interposer for iPhone 4 unlock
First up, we have the Gevey Pro interposer to unlock iPhone 4 basebands 3.10.01, 2.10.04, 4.10.01 and 1.59.00 on iOS 4.0, 4.1, 4.2.1, 4.3 , 4.3.1 and 4.3.2. This SIM card based unlock was initially sold under the name of Gevey SIM, however just recently, Gevey Pro was introduced which claimed to bring a host of bug fixes with it. Gevey SIM branding has now been discontinued. Gevey Pro iPhone 4 unlock does not require a jailbreak and will not void your warranty.
So how does Gevey Pro unlock iPhone 4? Basically, it forces baseband activation through the emergency dialer. The procedure works if your network handles 112 calls properly according to the GSM standard and that they are tolerant to TSMI spoofing and do not actively validate your SIM again for incoming calls. However, the legal status of Gevey Pro unlock still hangs in the balance. MuscleNerd of the iPhone Dev Team has previously said that this method for unlocking iPhone 4 is illegal primarily because of the fact that it dials the 112 emergency number and then hangs up. He said that this is illegal in the U.S. and that it may also be illegal in many countries across the world.
2. Rebel SIM for iPhone 4 unlock
Rebel SIM will unlock iPhone 4 baseband 3.10.01, 2.10.04, 4.10.01 and 1.59.00 on iOS 4, iOS 4.1, 4.2, 4.2.1 and iOS 4.3. Bear in mind that this is the same SIM based unlocking solution which has been deemed illegal. Rebel SIM comes in two variants. Rebel Pro Micro SIM, the flagship product comes with its custom iPhone 4 SIM tray ensuring that the IC stays inside the iPhone 4. Rebel Lite Micro SIM, meant for budget users, doesn't require any special micro SIM tray, meaning that the IC is on the outside of the iPhone 4 when installed. Rebel SIM also forces baseband activation through the emergency dialer and is likely to be illegal in most countries as well.
3. iPhone Dev Team's 40 bit NCK hack for iPhone 4 unlock
We've been waiting for this for quite some time now. The software based iPhone 4 unlock solution to unlock basebands 3.10.01, 2.10.04, 4.10.01 and 1.59.00 is much sought after at this time. Nobody knows for sure when the iPhone Dev Team will release the hack to unlock iPhone 4 on the above mentioned basebands. For all we know, the iPhone Dev Team has been very busy with all the work that they've been doing to incorporate the iOS 4.3.1 and iOS 4.3.2 untethered jailbreak exploit in Redsn0w and PwnageTool and following up with releases so that we can easily jailbreak iOS 4.3.2 untethered on our iPhone, iPad and iPod touch. Lets just hope that they start working on the new iPhone 4 unlock soon.
Alternatively, if you've an iPhone 4, 3GS on baseband 01.59.00, 04.26.08, 05.11.07, 05.12.01, 05.13.04 and 06.15.00, you can unlock your device using ultrasn0w 1.2.2.
How to unlock iPhone 4, 3GS on iOS 4.3.2 using Ultrasn0w 1.2.2
First, jailbreak your iOS device by following the instructions here. Then, here's how to unlock iOS 4.3.2 iPhone 4, 3GS using ultrasn0w 1.2.2.
Disclaimer: iPhoneism.com does not encourage or endorse these illegal methods. This article is for informative purposes only.