Manually update Nexus One to Android 2.2 Froyo

Yeah I did it with the help of this site!

The steps are:

1. Download the update from here.
2. Rename the file to Note that if you’re using Windows, just rename it to “update” (no quotes, of course) because it’s already a zipped file.
3. Copy the file onto your microSD card.
4. With your Nexus One off, hold down the trackball and press the power button.
5. You’ll be booted into a white screen with three Android robots on skateboards. Select “Bootloader.”
6. On the next screen, select “Recovery.”
7. Your phone will reboot, giving you a picture of the Android robot and an exclamation point inside a triangle.
8. Now press the power button and volume up button at the same time. It could take a couple of tries.
9. Now (using the trackball this time) choose “Apply” and let things run their course.

I did not intend to root it now. If you want, you can follow this steps:
# f you’re coming from stock and want to root, then follow steps above and then apply this update from Cyanogen.
# Or, if you’re coming from an already rooted rom/recovery, just apply this update from Paul O’Brien


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