Optoma ES523ST Serivce Manual page 58

10. Proceeding Picture.
11. It takes about several minutes, the firmware
upgrade process is finished, "Download
completed" will appear on the screen.
- The projector will automatically turn on.
12. Check FW version.
- Get into the service mode to check the
firmware version.
(To get into service mode, please press "Power", "Left",
"Left" and "Menu" buttons sequentially.)
ES523ST/EW533ST Confidential
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