[Q]Returning to stock

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http://forum.xda-developers.com – Hi guys, I unlocked the bootloader with HtcDev and I installed the latest recovery. I didn't install any roms.(i have a weird feeling that this is important) After reading that official JB is coming this month I decided to give up installing a custom rom for the time being. How can I return everything to stock so that I can install the official JB when it arrives? I know how to relock the bootloader, but what do I have to do with the recovery that I installed? (HowTos)