Dahua International Version and Firmware updates

So did Dahua begin the Manual check for software based on a specific series of cameras or would all new cameras and firmwares have this feature ?
 
Its like Ford and Chevy! You like what you like, In my situation the Installs are going in a Institutional setting I have to manage. I find it easier for me to go this route. Lots of people do it with BI also, their are TONS of threads of this subject here so search it out for yourself.