RUU Help

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http://forums.androidcentral.com – I recently unrooted my unbranded UK HTC One so I could flash Android Revolution HD for a sneak preview of 4.2.2. I'm now looking to unroot my device so I can update to stock 4.2.2. Can anyone signpost me to the correct RUU? I've found a list on xda but I'm not too sure which one I need for my unbranded UK HTC One. Thanks in advance. Posted via Android Central App (HowTos)