Help unrooting the ultra

[chevanlol360]

Does anyone know how to unroot the phone at all???? Or know where I can download the firmwire for the phone and transfer it to the sd cardd and update in manually it recovery state so I can reinstall the firmwire so that it would be unroot? Just in case I brick ir or have to return it

 

[smith058]

Remove the file su from /system/bin/ and you'll be unrooted!

...