How To Root the Nexus One

Before you begin rooting your Nexus One, you must have setup ADB.

Procedure:

 Step 1:  Download Superboot

Step 2:  Save it to your computer, unzip it to your C: by right clicking it and clicking Extract Files. Once extracted, rename the folder to Superboot.

Step 3: Turn off your Nexus One and then plug it in to your computer via USB cable.

Step 4: Turn the phone back on by holding down the trackball and hitting power. Continue to hold it down until the fastboot screen emerges.

Step 5: Open the Command Prompt on your computer from the Start Menu, then type cmd and hit enter in the search box OR click Run, type cmd and hitting enter.

Step 6: Once it opens, type the following commands with hitting enter at the end of each line:

 cd\

 cd C:\Superboot

 fastboot-windows devices

 Your phones serial number should display proving that it is connected and your computer can see it.

 Then type:

 fastboot-windows oem unlock

Step 7: Then follow what the screen says to do on your phone and select Yes.

 Ignore the error you get at the command prompt. Also your phone may reboot, if it does just turn it off, then turn it back on by holding down Power and the Trackball to get back to fastboot before continuing on to the next step.

Step 8: Now, while the phone is still connected, go on your computer to the Superboot folder and open it. Inside you will see a file called, install-superboot-windows.bat

Step 9: Double click install-superboot-windows.bat and wait for it to finish. Rooting successfully completed!