![]() ![]() Apple stops signing older firmwares once a new one is out. If the signature does not match, the device raises an error and the restore process stops. If the signature matches then the restore process can continue. Your device checks the information and verifies the signature (making sure it really came from Apple because it CANNOT be forged as the encryption is very high). ![]() ITunes packages up this valuable information and sends it to your device. Apple takes the firmware version files and combines them with your ECID and generates a hash that ONLY APPLE can generate. It is signed with a unique id () that only your device has. See, the firmware is now signed for the below devices. The way they stop you is basically by a simple response that iTunes receives when you try to restore the firmware of your choosing. Once you ‘upgrade’ they don’t let you downgrade. Download TinyUmbrella v7.12.00 (For Mac OSX).įor those who don’t know what the Firmware Umbrella and TinyTSS are, check the details below along with the Download Links Firmware Umbrella When you try to restore an older firmware on the devices listed below, Apple won’t let you do that. You can now download TinyUmbrella 7.12.00 to save 7.1.2 SHSH blobs on iPhone 4. TinyUmbrella is a unified version of and TinyTSS. Notcom has released TinyUmbrella to save SHSH blobs for iPhone, iPad and iPod Touch. ![]()
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