Optoma H27 Service Manual page 37

6. Choose "Baud Rate" as "115200", "Data Bits" as "8", "Stop Bits" as "1", "Parity" as
"None", "RTS" and "CTS" as "Disable", and then click "OK".
Click "OK" after selecting the right functions in "DLP Composer Perference".
7. Click "Flash Loader"
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