Optoma EP721 Family Service Manual page 48

9. Proceeding Picture.
10. When firmware upgrade process is
finished, the unit return to stand-by status.
The LED power lights on and appears
blue.
- Unplug USB cable and power cord and
replug in power cable.
11. Restart the unit and get into the Service
mode to check the firmware version.
(To get into Service mode, please Press
"Power", "Left", "Left" and "menu" button
sequentially.)
EP721/727/723/728 Family / EW1610 Family Confidential
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