Sorry but what is unzip?Anyway here is what happens:
I went to the Pentax website and downloaded it into my computer.Then there's 2 programs.1 is the README(instructions) and the other one is FWDC206B.
I open the FWDC206B and it says:you are attempting to open a file of type 'BIN file'(.BIN).Then i press 'open with..' and it says windows cannot open this file.To open this file,windows need to know what program created it bla bla bla.....
Then there are 2 options.1 is use the web service to find the appropriate program and the other is select the program from a list.Whichever i click,it will say 'No known program will open this file.This file is part of a program'
After that i am trapped cos there is no other way out