Optoma EP7155i Service Manual page 58

Delta Elec. Inc. EP7155i & EP1691i
Flash-Tool will automatically erase the old firmware before upgrading.
Erasing status.
Caution:
DO NOT install any USB driver when erasing or upgrading process started.
Note: After old firmware is erased, the new firmware upgrading process will start.
Upgrading new firmware.
Company Confidential Optoma_______________________ Delta____________
58
2010/01/11