Question [Q] Return to stock

Hello there,

I need some help returning to stock since I've gone too far with the desire and no idea how to go back.

I have an orange branded desire which is rooted and S-off'd and I'd like to unroot it. I'm not too concerned about taking it back to orange branding, just a generic RUU would do (if it's possible, because I'm not interested in goldcards). Right now I'm on Android 4.4 and the HBOOT version says "6.93.1002"

I'm fairly competent with fastboot commands if necessary and just need help with taking this phone back to stock. If you have any more questions let me know and I'll answer.

Thanks in advance
HTC Desire HD, Evo 3D, HTC One X, HP Touchpad, Nexus 7 R.I.P
-- Red 5 --
-- Nexus 10 --