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)That is what was said in that email. I don’t know for sure but I think that Gevey team simply tries to increase their profits. If your iPhone 4 would be on 04.10.01 baseband you need to obtain Gevey Sim to unlock it. You can also use some alternative method to unlock your iPhone 4. There is possibility to do that by Sim card re-writing. This method is not fully tested but I think that it works. But if you want you can downgrade 04.11.08 baseband using SHSH server.
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LetsUnlock Services List
iPhone & iPad Activation Lock Bypass
Use LetsUnlock iCloud Tool to bypass Activation Lock Screen on iPhone and iPad running on iOS version up to 14.6.Read More
MacOS iCloud Activation Lock Bypass
The LetsUnlock Mac iCloud Activation Lock Bypass Tool will help you to remove Activation Lock on an iCloud locked Mac which is stuck on Activation Lock Screen with no need to enter the correct Apple ID and password.Read More
Mac EFI Firmware Passcode Bypass
The LetsUnlock EFI Bypass Tool is a one button solution, which you click to start the EFI Unlock process. Bypass EFI with out password! Everything else does the software.Read More