Unlocking Google Nexus S Bootloader

I need to get full permission control on my Google phone in order to start research on it. I need to perform 2 things before I start any development: unlocking & rooting Nexus S.

Unlocking the bootloader will allow me to install custom ROM. And by rooting it, I can gain full access to the filesystem.

My phone comes with Android 2.3.3 Gingerbread. Here's the steps to unlock it:

• Download and install Android 2.3 SDK along with fastboot from here.
• Turn off your Nexus S completely.
• Now hold down the Volume Up + Power key simultaneously.
• Now you should be in standard recovery mode.
• Open Command Prompt on Windows and type the following command to confirm if your device is connected via USB cable or not.

fastboot devices

• If fastboot is showing your device as connected, use the following command to unlock the bootloader of your Nexus S.

fastboot oem unlock

• Thats it! Now your Nexus S' bootloader is unlocked and you can easily install custom ROMs on your device.