Save SHSH Blobs (ECID SHSH) iPhone 3.1.3 a iPad 3.2

[pepas]

Ahojte na netu jsem našel tuto a chci se zeptat k čemu je to dobré atd .

http://www.redmondpie.com/save-shsh-blobs-ecid-shsh-iphone-3.1.3-ipad-3.2-9140709/

[Galaxy]

Se zalohovanymi SHSH muzes udelat DG z 3.1.3 na 3.1.2.. Bez nich ne.

Tady to mas pekne popsane:

So first up, what exactly is SHSH blob or ECID SHSH? Well, it is basically is a unique signature which is checked against Apple servers whenever you decide to restore the firmware on any of your iDevice (iPhone, iPad and iPod touch). Once a new firmware is released, Apple stops signing the older firmware, hence making it impossible to restore back to the older firmware from iTunes.

Now to “why is it important to save SHSH blob”: The creator of Cydia has setup a new server which basically mimics Apple’s verification server and can save your older signature (SHSH blob) so that you can downgrade or restore back to the older firmware. This is important because if you don’t have your SHSH blob saved, and accidently update to new firmware, you’ll loose your jailbreak and furthermore, you wont be able to downgrade back to older firmware to re-jailbreak your device.

[pepas]

a nemohl bys dát nějaký odkaz jak provést ten downgrade z 3.1.3 na 3.1.2

[Galaxy]

Napriklad zde: http://www.ihackintosh.com/2010/02/downgrade-iphone-3gs-os-3-1-3-to-3-1-2-with-cydia-shsh/