Root Stock firmware nexus one

[Member116158]

I just bought a Nexus one on ebay (big upgrade from the BH2) and it already has been rooted, not sure if it is a custom rom or not, but I wanted to return it to stock firmware. If anyone could point me in the right direction, I would greatly appreciate it. Thank you.

 

[danger-rat]

Follow the link below, and read the unroot/restore instructions. You want the second method, which is the PASSIMG method (file names are case sensitive). The link to the files is on the word "here" on step 2. Make sure to use FRG33...

http://forum.xda-developers.com/wiki/index.php?title=Nexus_One/Guides_%26_Tutorials#Unroot_.2F_Restore_your_Nexus