After this you must reboot in FastBoot Mode and type in Command Prompt: fastboot oem get_identifier_tokenSubmit
Then submit the token in order to receive your unlock code binary file...
When copying the token, start with this line:
<<<< Identifier Token Start >>>>
And end with this line:
<<<<< Identifier Token End >>>>>
The difference with the official way is that you only unlock the bootloader. You don't get S-OFF so you can't make changes 'on the fly' with Android running, you'd need to do changes with the phone in HBOOT/fastboot mode.