Google Nexus S and Nexus One have recently received Android 2.3.3 Gingerbread OTA update. So here is a good news for the owners, as they have been waiting for a long to grab this update, thanks to the guys over at XDA Developers who have managed to released the update ROMS for the phone.
The roms available for download are just like the OTA updates which Google have planned to push the updates for Nexus S and Nexus One within few days/weeks, as they are official you shouldn’t face any bugs executing them.
You can get complete information from XDA Developers thread how to get the roms installed on your Google phone. You can also find the download links on the site.