K72
K72A
DS-7104HQHI-K1
DS-7104HQHI-K1(B)
As in the spreadsheet, is it K72 or K72A?
I think that it is K72A witch has totally different firmware.
What (B) version represents? Does it have some extra functions, like (S) versions have?
I don't want to brick my DVR doing this firmware update...