How To Grab ECID Code For 3GS ( Mac )

NOTE ;

This procedure is only for iPhone 3gs users who are already on firmware 3.1.x, and are interested in getting their certificate in order to future proof their device for jailbreaks. If Apple ever plug the exploits used for jailbreaking, this will make it possible to downgrade firmware again to re-jailbreak, as Apple prevent this normally. This needs to be done with every firmware update to stay safe.

Before starting download usbview here

For Mac OS X Operating System

1. Put your iphone into recovery mode by following this procedure ;

a) Turn your device completely off

b) Hold down the home button

c) Whilst holding down the home button, connect to your pc via usb

d) Keep holding down the home button until you see the connect to itunes screen on your device, you are now in recovery mode

e) If itunes opens just close it down

2. Open usbview

3. Navigate to Applications>Utilities>and start "System Profiler"

4. This will open a new screen and you select "USB" from the block on the left, then click on "Apple Mobile Device (Recovery Mode)" and several numbers appear

5. Copy the small 16 digit ECID code

6. To escape recovery mode and power down your device, simply hold down the power and home buttons for ten seconds