This the example from Iczelion s Win32 Assembly Tutorial part 24. In order to assemble the example, you have to have ml.exe, link.exe and nmake.exe in your path. If they re not in the path, you will have to edit makefile to include the full path. You

How to F/W update. 1) Connect PC and printer with USB cable. 2) Turn on the power of printer.(Ready Status) 3) Drag the f/w file and Drop down on the usbprn2.exe. And then f/w update will be started automatically. 4) Please wait until