Unlock Root can be found on the official site Unlock Root of Android
You have to options Root and Unroot.
I just tried both and I confirm that they work.
"psneuter" is root exploit. It can be found as part from some Root Apps.
You need working ADB to use it.
1. First copy(push) it on the device.
adb push psneuter /data/local/
2. Make it executable.
adb shell chmod 04755 /data/local/psneuter
3. Run it.
adb shell /data/local/psneuter
4. Restart ADB with root permissions.
This can be used to backup your phone's ROM with romdump.