Apple has just released the first beta of iPhone OS 4.1, so you are advised to save your ECID in 4.0.
Thanks to this, you will be able to downgrade to 4.0 in the future if you encounter a problem?
This tutorial works for the following devicess:
- iPhone 3GS
- iPod Touch 3G
- iPhone 4
- iPad (wifi and 3G)
First, launch the software. If you are under Windows it is possible that your fire block the software. A window like this one then appears:
Click on “Allow access”
Connect your device to the computer. Close iTunes.
Click on “Start TSS Server”
Click on “Save My SHSH”.
Thanks to the TSS server launched previously, your SHSH was automatically sent to the Saurik servers. So when you open Cydia, it tells you at the top of the home page that your ECID is saved;)
The iPhone3GSystem team