Within a day’s release of Nexus One, we have seen a successful ‘Root’ and now a Recovery Image which empowers you with nifty features like creating/restoring a backup, flashing the radio, flashing a custom ROM and many more. It has been an exciting day for the Nexus One!
The famous Amon_RA from Modaco released the recovery image for Nexus one earlier. Here are the steps you should follow to flash this recovery image v1.5.3.

CAUTION : If you did not root your device already, you MUST first do so. Follow this step …

There are 2 types of Google Nexus One devices : Retail and Google’s holiday gift to its’ employees. The retail version bought from http://google.com/phone has its bootloader locked but Google lets you unlock your bootloader unlike Apple! Google warns that the warranty will be void if you unlock the bootloader but seriously, unless you install some really dumb applications, you cannot damage the device.
Rooting your Google Nexus One is a 2 step process. One, Fastboot and the other Superboot (courtesy Paul from Modaco).
Download this file (Rapidshare). or you can also …