The sweetest things keep on coming to the Nexus One users. Things that other Android Users drool over are flavor of the day for Nexus One users. And why shouldn’t it be, when this is the benchmark Android phone, the one that Google makes and sells itself.

Android 2.2 latest build on Nexus One

Now the latest build of Android 2.2 aka Froyo, Build FRF91 is being rolled out on the Nexus One. This over-the-air update is being rolled out now, so be patient and hopefully you will have it soon.

Those among who have mutilated your current Android builds via rooting, Custom recovery modes or fancy custom ROMs, will not be notified by the OTA santa for your bad deeds. You will have to repent for your sins by performing a rollback to stock builds FRF50, FRF83 or stock Android 2.1 to get the upfate from the Google santa. For those of you too impatient to wait for the Google notification, just follow the instructions below to get your hands on a spanking new build of Android 2.2 now on your Nexus One.

Update using official patch file
You must be runnning the stock FRF85B release with stock recovery. Copy that file to the root of your sdcard, rename to update.zip, launch recovery (power on with volume down held), press power and volume up when the warning triangle icon appears then select ‘apply update.zip’.
Download: Google

Update.zip to flash with custom recovery
This is the totally stock FRF91 repacked as update.zip. The radio hasn’t changed since FRF50, so if you are using it, you can keep it and install the noradio version.

Download:
- without radio image: Download Links (md5sum: 041b1e21433e636340ca6b56f141a315)

Root
To root FRF91, just flash this update.zip (contains busybox, superuser.apk, su, unsecured boot.img) (md5sum: c6c27598c210576792d6d56738a2edde)
Addons pack
Just flash this update.zip (md5sum: 7cf8074d3685681728043f367e6b35fd) contains :
- cyanogenmod 6.0 kernel (2.6.34 overclockable to 1113mhz using setcpu)
- dev tools in xbin
- hudge apn list
The three updates can be flashed at the same time (I mean without rebooting between the flashes), just flash it in this order: base system, root then addons and reboot