What is the future of DDCSv2.1

OldGuy57

When I unzip files to my UDIsk and put it in the controller, it does not update or upgrade the firmware. It doesn't do anything except boot normally.
I would like to ask if there is some sort of a trigger or way to say to the controller to update or upgrade
DDCSV2.1 Firmware now at 2018-07-27-97NOR
Thank You

OldGuy57

Does this posting mean that an NC/NO limit switch will not work ?   "DDCSV2.1 or 3.1 requires the use of an NPN photoelectric switch"
I have connected limit/home switches according to the online instructions, and the DDCSV2.1 never recognizes the,
In reading of the postings here, the reply to User Stein is the only reference to the NPN type switches I can find.
If NPN switches are the only ones recognized, I will purchase them , but I dont want to waste time and money only to find out NC/NO will work, and perhaps I just dont know what settings to change. I adjusted settings as you have indicated in other posts to allow HOME/LIMIT to share that switch, but that didnt change anything either. Please help, and thank you.