(1) Boot from Windows 95/98/NT.
(2) Install the utility "FlashIB50" (2 disks) if not install before.
(3) Run the utility "FlashIB50" which in the [Start] -> [Programs] -> [Jarltech] -> [FlashIB50]
(4) Click button "Load" to load the binary file "81AV43.BIN" (for example)
(5) Click button "Flash", and will get beeps from IB board 5.0, 
     and you can see the flash block number running...
(6) If ok, you will see a message just show "Flash successful..."... , click [Exit] button ...
