Yaesu FT-891 Firmware Update Manual page 8

8. Click the [ Configure ] button on the YFSW023 transfer software screen, and then set the COM port
number.
(Select an Enhanced COM port when using a USB cable. Please see "FT-891 Virtual COM Port Driver"
on the Yaesu Website for details (http://www.yaesu.com/)).
9. Click the [ Browse ] button on the YFSW023 transfer software screen. Then select the folder that contains
the previously downloaded transfer firmware (dat file).
10. Click the [ DSP ] button on the YFSW023 transfer software screen.
Only the dat firmware file will be displayed.
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