Downgrading baseband 4.11.08 to 4.10.01 to unlock an iPhone 4 on iOS 5.0.1 had been considered not possible now due to the way baseband works. It is only possible to upgrade a baseband but not downgrade for unlocking purposes unless Apple still signs the firmware. But this might be all about to change according to new SHSH servers.
Now it seems there might be a possibility according to new SHSH servers. If you have been following the jailbreaking/unlock scene you would know this is not entirely new but the thing that interests me is that these servers can possibly downgrade your baseband.
The folks over at beijingiPhonerepair are reporting something interesting and these are “downgrade SHSH servers” for the iPhone 4 users who are stuck on baseband 4.11.08.
Via email from Chinese hackers who have developed new SHSH downgrade servers.
This 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)”
Now the question that remains is are these downgrade SHSH servers for real? And if they are how do these work for unlocking purposes.
It is also reported that the developers behind this downgrade servers for 4.11.08 are non other then Gevey, the company that has been providing unlocking solutions for years. If it is Gevey it would make sense to charge and small fee and downgrade to 4.10.01 and use Gevey SIM which can unlock that specific baseband.
Although it is too early to determine whether such serves are working or not but it is interesting to see a new kind of solution coming up for those users who are stuck on iPhone 4 baseband 4.11.08.
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