Nexus One receives additional Android 2.2 Froyo update, FRF91
A forum thread over at XDA-Developers has revealed that the Google Nexus One is receiving yet another official OTA update to Android 2.2, bringing the build up to FRF91. The word on the street is that this update is a security fix, and as one XDA forum poster notes; “My guess would be that it’s probably a fix to the exploit which allows people to root without unlocking the bootloader.” Of course, it is his guess. If you want to check out the update file yourself you can access it here.
The update .zip is only 2m large and this makes it obvious that it does not contain a huge amount of updates.