If my Lumia 920 using the Windows Phone 8.1 Developer Preview, should I need to update to the Official Update of Lumia Cyan before I want to update to Windows Phone 8.1 Update 1?
no... it is just a firmware update, and you can install it whenever you want (it also download windows phone 8.1 (update 0/original) if your current OS is lower than the OS it download)
Ok I just got denim....not sure if was the official one or DP is there a way to tell?
I just saw the notification you have an update..clicked it and it went straight into phone update...i didn't open dp....any way to tell where the update came from? Official or DP?