Can I trust this?

If you feel sketch . Just use the wugsfresh tool kit. Very simply does everything for you.
 
We've got Wug's toolkit thread as well as a guide for doing it the manual way via fastboot. It's quite easy :)
 
Looks about right... but the video uses the SDK... which if you have that, you don't even need the toolkit.

Sent from my Galaxy Nexus using Android Central Forums
 

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