Late last night I started seeing stories on the internet that Google had released a new version of FroYo. Android users have been patiently waiting for Google to release FroYo for several weeks. About a month ago, Google released a very early build, FRF50. Many people, including this author, manually downloaded this build. A little over a week ago, Google released another build, FRF72. Yesterday came news that Google released the "source code" for FroYo to developers, a sure sign that Android 2.2 was about to be released to the public. When news came out last night that a new build, FRF83 had been released, the initial information was that you had to go back to FRF50 if you wanted FRF83. Websites and forums started publishing detailed instructions on how to uninstall and reinstall the builds and even go back to Android 2.1. This morning I discovered a way of manually installing the new FRF83 build from FRF72 without doing anything to the phone. Here's a step by step method of manually upgrading your phone to Android 2.2 FRF83. This will only work for the Nexus One users.
1. Download the update file. Here is a link to the download:http://android.clients.google.com/packages/passion/signed-passion-FRF83-from-FRF72.684bd56a.zip
2. Rename the file "update" and save it on your SD card on the Nexus One.
3. Turn off the phone and turn it back on by holding down the trackball and power button.
4. Select "Boatloader" and then "Recovery."
5. When you see the android guy with the log, press the volume up button and the power buttons.
6. Choose "update.zip" and wait until it installs the update. Reboot the phone and that's it.
It is unknown for sure whether this is the final release of Android 2.2 but it appears as if it is.
Let us know if you had success updating your Nexus One to Android 2.2.