I just could not wait until my phone get the OTA update from Google. :p
So, I decided update it manually.
And, here is the link for the one who wants to taste the latest gingerbread (Android 2.3.3 - GRI40).
(for the Nexus One that using Froyo-FRG83G only).
If you got the failed message while updating, maybe you could update the Hboot first.(the required version of Hboot is 0.35.0017 )
Here: Hboot 0.35.0017
(Ref: XDA-developer )