Tutorial: We are the SHSH and to serve (Updated 04/06/1911)

Why are the SHSH?

Apple, tired of the jailbreak, introduces a new iPhone 3G (new bootrom) and begins to require a firm to install a firmware, ie. Ipsw any iOS are incomplete, in order to install them lack a unique signature of your device, so you can only install the latest firmware, because Apple is the only signature.

Where do the SHSH?

The SHSH can only leave Apple, request a restoration with a firmware and Apple have to give your signature so that you can install, but the restoration will fail.

What is a SHSH?

We can say that is an electronic signature for comparison is like an ID (identity card in Spain) with the difference that you need a new one for each new firmware that Apple set.

What do we use the SHSH in the world of jailbreak?

We used to restore previous versions, as we have said we can only upgrade to the latest version because Apple just signed us that version.

But if we have the saved SHSH can upgrade to the version you want (provided we have the SHSH of that version.)

Sometimes used for a kind of jailbreak that requires a file from a beta, for example, for untethered jailbreak MONTE need iOS 4.2.1 (SHSH and gives them to us now because Apple is the latest firmware) and a file iOS 4.2b3, therefore, that file will need to install the IOS SHSH 4.2b3.

How do you keep the SHSH?

There are two ways to save SHSH, if you have the jailbreak become increasingly see a new firmware will automatically save your SHSH Cydia without having to do anything.

Whether you have done jailbreak or not, there is another way to keep a program called TinyUmbrella available for Windows, Mac and Linux.

"I can only save the SHSH the version I have installed?

NO, you can only save the latest version SHSH that Apple offers on iTunes, no matter which version you have on your iPhone.

UPDATED:

SHSH can save the latest version of iTunes Apple offers TinyUmbrella, and now you can save SHSH the version you have installed on your iPhone (even earlier) with iFaith .

So how do I get a SHSH an earlier version to which I have installed?

Simply can not, as we have said SHSH can only get the version that iTunes has officially, that is, or you saved it in time or there is no way to do it.

UPDATED:

You can also get SHSH the IOS version you have installed.

Where are stored SHSH?

What we do is apply firm (SHSH) to Apple, and stored in a server Cydia, you can save on your computer to see if there were any catastrophe to the server resend Cydia.

How do you get the SHSH of Cydia?

When you install a new firmware iTunes is connected to an Apple server and requests the SHSH, what we do is modify the hosts file on our computer (the file where your computer tells iTunes where you have to connect to order SHSH) to instead ask of Apple's request Cydia, so we can get the firm to restore older firmwares

How to modify the Host file?

The easiest is to download TinyUmbrella and the same program is automatically modified.

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