Developer Steve Troughton-Smith tweets, "Not entirely sure why the signing window has opened for iOS 6–10 on various iOS devices, but not gonna complain. Have some iOS 6."
Currently signed firmware versions include: iOS 6.1.3, 7.0.3, 7.04, 7.1, 7.1.1, 8.0, 10.2, 10.2.1, 10.3, and 10.3.3. Unfortunately, the oldest version of iOS 11 being signed is 11.2 which means you still cannot downgrade for the iOS 11.1.2 jailbreak; however, those with an A7-A9 device may want to downgrade to iOS 10.3.3 for the G0blin jailbreak.
You can download previous iOS firmware versions from the links below:
● Where To Download iPhone Firmware Files From
● Where To Download iPad Firmware Files From
● Where To Download iPod Touch Firmware Files From
Hold down Option (Mac) or Shift (Windows) which clicking the restore button in iTunes to select a specific firmware IPSW to restore to.
As expected, it appears this was unintentional and Apple quickly closed the signing windows following media attention.
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