BenQ PB6200 - Manual (Page 59)

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6. Run FlashUpgrader.exe and open the file pwSDK.inf. You can browse to locate it. Select the
correct COM port and use 115200 as the BAUD rate.(as Fig. 4)
7. Press the “Flash” button , and then turn on the power switch. (as Fig. 5)
8. Now the progress bar in the FlashUpgrader should be running.
9. Download is complete ,Pls turn off power switch , and turn ON power switch.
10. Power on projector and the factory settings should be restored.
Fig. 4
Fig. 5