Jailbreak fans with 32-bit iOS devices are now able to downgrade or upgrade with iOS 9.x as the destination firmware, leading to the jailbreaking route. This was made possible by the public release of iDeviceReRestore that is now on version 1.0.1.
The solution, according to iDownloadBlog.com, was created by a team of developers thanks to the re-store bug that was first discovered by @alitek123. With iDeviceReRestore, "legacy devices may never be without a jailbreak again, able to forever return to iOS 9, without fear of updates or restores," the report added.
To be clear, the tool will only work on 32-bit iOS devices and start the jailbreaking process coming from iOS versions 6, 8, 9 and 10. Earlier, iDB said iOS 7 is not covered by the bug and it remains unclear if the same case applies with iDeviceReRestore public release.
The bug can also trigger the downgrade or upgrade process no matter if the firmware of origin is jailbroken or not. What's more important is that users have the saved blobs for the destination firmware, which the report said is restricted to iOS 9.x.
That means, jailbreak fans can theoretically start from firmware versions 6 to 10 and then head to iOS 9. Now choice of jailbreak tool will dictate on the final jailbreak destination. If Pangu9 is preferred then it will be for v. 9.2-9.3.3.
It appears that the iDB report recommends the use of Home Depot as the crack will permit iOS 9 firmware modifications from versions 9.1 to 9.3.4. There was an indication that iOS 9.3.5 would be cracked open soon but nothing solid has yet to be seen from the supposed provider, which iDB identified as FriedAppleTeam.
The bug is seen to stay usable for a long time as the same report said the technique employed in the iDeviceReRestore can't be patched by Apple. Developers also revealed that the same bug has been detected on iOS 10.2.1 but exploiting it seems a remote possibility for now.
So iDeviceReRestore 1.0.1 is a 32-bit exclusive at the moment and jailbreak fans with compatible devices willing to test drive can do so by heading to this link. One more thing to note is that the solution is currently limited to MacOS and Linux, and there is no clear indication if work is now underway for a Windows version.