Saurik developed a great way to get your signature files in Cydia regardless of the firmware you are running.
Just today, he mentioned in his twitter that within days, every body’s 3.1.3 shsh ’s should be saved in cydia (if you chose the make my life easier, of course!). Say, what if Apple released a patch for an exploit in 3.1.3 tomorrow and you were unlucky not to have your shsh blobs saved? Or what if you are one of us who, while loving and being grateful to Saurik’s works, also want to have those 64Kb gold pieces in your hard drive just so that you feel safer. Well, here is how to get them.
Note : This procedure allows you to save your precious SHSH blobs on your PC/Mac so you can save them forever. You must have your SHSH saved on Saurik server by hitting the make my life easier button on home page of Cydia. If you already saved your SHSH on Saurik server you needn’t to repeat the process every time.
Windows:
1. Get ECID grabber from here http://difrnt.com/blog/?p=25
2. You need to have your iPhone in restore mode, which is the connect to iTunes screen. (I know it’s even scary to reboot for tethered but just keep this in mind though so that you can get your ECID if you ever need to reboot.
3. Run the ECID grabber, copy and save the number, that is your ECID
4. Get firmware umbrella thefirmwareumbrella
5. Open umbrella.exe, select saurik (this will request the shsh signature from APPLE, save it to your PC and also put a copy of it in Saurik’s server check here )
*Make sure the hosts file is not pointing to saurik server or you won’t get the certificate if it’s not available in cydia yet, select iPhone 3gs 3.1.3 and run it.
6. It will save your shsh copy in the same directory where the umbrella.exe file is, copy it and rejoice, for you have your own 64kb gold with you.
Mac:
1. Get your ECID following this instructions: Grab and get Signed your ECID for iPhone 3GS OS 3.1
2. Get firmware umbrella thefirmwareumbrella, move the Umbrella app OUT of the .dmg file preferably onto your desktop.
3. Open umbrella.exe, select saurik (this will request the shsh signature from apple, save it to your pc and also put a copy of it in Saurik’s server)
*Make sure the hosts file is not pointing to saurik server or you won’t get the certificate if it’s not available in cydia yet, select iPhone 3gs 3.1.3 and run it.
4. It will save your shsh copy in the same directory where the umbrella.exe file is, copy it and rejoice, for you have your own 64kb gold with you.
How to Grab SHSH older than 3.1.3 if You Saved Earlier
You can also do this to get a copy of your 3.1.2 or older signature files IF you have them stored in Cydia, to do that just select the right option in Umbrella, and make sure that gs.apple.com in your host file is pointing to saurik’s server. You can check how to in here: How to Downgrade iPhone 3GS OS 3.1 to 3.0 With Cydia SHSH.
As an interesting note, this process can be done by non-jailbroken iPhone users to get their bloobs for the firmware Apple is signing at the moment they do the process (as of today, that would be 3.1.3)
This post is written by @osornior who is a iPhone enthusiast tormented by a nasty new 3gs. Stay tuned with us for more of iPhone news, you can follow us on twitter via @iTune2iPhone and keep your self updated with the latest of iPhone community.
Source: ihackintosh & The Firmware Umbrella
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