I can not understand Apple's interest because we can not lower our version of IOS, while we are pleased with our device given what else we are in which version?
Since the advent of SHSH the downgrades have become more difficult if you did not have a SHSH of the version you wanted you could not sign off kept the firmware to install, and Apple just signed the latest firmware.
L In contrast to baseband is not no way he could lose, well, to explain in a quick and easy, Apple has begun to apply the same method for the baseband firmware, and from 5 IOS can not do a downgrade.
Until now dependent on your ECID SHSH, will now be generated uniquely for each restoration, and refined the boot sequence to depend on the authenticity of this APTicket. Authentication APTicket this happen on every boot, not only in the restorations.
If you can, however, go down to IOS versions prior to 5 (every 4 or IOS IOS 3) provided that you have your SHSH saved.
Apple has moved against the jailbreak tab and downgrade, shift from hackers.
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