![]() ![]() The operating principle of this limitation is simple. For iPhone 2G, iPod touch 1G, and Apple TV 1G SHSH is not used, so these devices can always flash at any available version of iOS. ![]() Starting with firmware 3.1.1, signing system was extended to the iPod touch 2G and 3G, and since the release of iOS 4.0 SHSH steel subscribe and iPhone 3G. signing system debuted in the summer of 2009, with the release of iPhone 3GS. SHSH Apple issues a special server (gs.) in response to the identifier of the device sewn, sent him to iTunes. SHSH certificate ( Shsh blobs ) - digital signature, unique to each iDevice, Which is signed by the firmware file before it is poured into the device. ![]()
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