To Unlock your iPhone using SAM Click here.
To Unlock your iPhone using Gevey SIM Click here.
To Unlock your iPhone using R-SIM Click here.
Update #2 : None of the above mentioned method works now as SAM unlock has been patched by Apple and Gevey/R-SIM were based on it.
If you are a jailbreaker and unlocker of an Apple iDevice, you may know that in order to unlock your iPhone using any software method (ultrasn0w) you must have a qualifying baseband. Not all basebands can be unlocked by a software unlock. If you mistakenly upgrade your baseband to a baseband that is not supported by software unlock, you are out of luck.
One must have to wait for the software unlock to be upgraded for that basebend so that his/her iPhone can be unlocked. Otherwise, there is a new kind of unlock available which is hardware unlock. You have to put a SIM along with your SIM in order to stay unlocked. These SIMs are known as Gevey SIM.
Your iPhone's baseband will be updated if you use stock IPSW instead of a custom IPSW. Once you upgrade your baseband, you can not downgrade it (it was possible long ago though). So what if you upgrade your iPhone's baseband? The current iOS version is iOS 5.1 and the baseband version is 4.11.08. The software unlock is far away for newer basebands. You can still use Gevey SIM to unlock your iPhone. But Gevey SIM does not work with baseband greater than 4.10.01.
So what if you could downgrade to baseband 4.10.01 from 4.11.08? Well, a Chinese website Beijing iPhone Repair is reporting that they received an email from Chinese hackers who claims that the Hackers group has developed SHSH Server that allows you to downgrade from 4.11.08 to 4.10.01 Baseband.
The message read as below (translated) :
"Downgrade baseband service is available to those who have mistakenly updated to iOS 5.0 or 5.0.1 and stuck on baseband 4.11.08. Software downgrade service: Downgrades to firmware 4.3.5, baseband 04.10.01, no SHSH backup required.
Guaranteed non-hardware type of downgrade, disassembling is not required, will not break your device in any way. You can put a tamper proof sticker on the screws (to prove that the iPhone is not taken apart)"There is no confirmation on this from anyone yet, and there is no further information available at the moment. This can be just a fake news but if what they claim is true, this will help a lot of people who have upgraded their baseband to 4.11.08 and are stuck without unlock. If one could successfully downgrade basbenad, he/she could use the Gevey SIM to unlock iPhone.
So this is it, will post update if available. Stay tuned.
