How to install android 2.2 (froyo) on Nexus One I have a rooted nexus one with the android 2.1 update1. I have received the OTA notifications for a system update for the 2.2, but it didn't succeed. I must have the phone rooted (for now) so I can have Hebrew on it.

Where can I download the latest android 2.2 (FRF 91) and how should I install it? Dows the upgrade also wipes the contents of the SD card?
The easiest way would be to install ROM Manager from the Market.

It is a fantastic application written by the guys that created CyanogenMod. From this app, you can download and install vanilla ROMs and custom ROMs with a few clicks. Highly recommended.