winocm, one of the hackers who develop the solution of untethered jailbreak for iOS 6.1.3 si iOS 6.1.4 he also managed to discover a solution baseband downgrade for the terminals iPhone, according to a tweet published yesterday. As you can see from the image, he managed to do this on a terminal iPhone 4 to whom he did downgrade la iOS 4 and managed to install the version of bass band available for that version of iOS, ultrasn0w being able to do them unlock/decode smoothly.
The hacker did not provide details about the procedure used, but it is clear that without SHSHs for iOS 4.x you will not be able to reproduce his achievement. Even if winocm managed to do it baseband downgrade for iPhone 4, unfortunately it is unlikely that a public solution will be offered, because the process is most likely difficult to reproduce by an ordinary user, and its automation through a software requires knowledge that the hacker probably does not have.
If you wonder why it would be important to launch a solution of baseband downgrade for iPhone 4, well I tell you that this terminal has no solutions DECODE starting with baseband 04.12.x, so users who own such coded terminals have to pay hundreds of dollars/euro for decoding.
