wait while finish creating file
congratulation you are done.
Pree like arrow on close
Now we need to restore this custom firmware to the iPhone 3G/3GS. Connect your iPhone to your computer and launch iTunes. While holding down the shift button, click on restore.
iTunes will ask for the firmware file. Just point it to the custom firmware you just build using sn0wbreeze 1.6.1 and sit back. iTunes will restore the OS to iPhone and when it finally restarts after the process is done, it’ll be jailbroken.
see video here