ViewSonic VLCDS25973-2W Service Manual page 36

4. Turn off the power switch of VP191. Key in the command "batch d:\flash\vs5321.txt" as the red circle shows, and
then click "Execute" button and turn on the power switch of VP191
5. After the firmware upgrade is completed, it will show the below information. Turn off the power switch of
VP191 and then turn it on again. The firmware upgrade procedure is then all complete.
ViewSonic Corporation
Space Bar
33
immediately(within 3 seconds).
If this space is too short to key
in, dreg the Space Bar to left
to extend the space.
Completed
Confidential - Do Not Copy
VP191b/s-1/-2