Yaesu FT-891 Firmware Update Manual page 6

11. hen the update is successful, the following screen will appear. Then click the [ OK ] button.
12. Click the [ Close ] button on the transfer software screen.
13. Turn the external power supply OFF.
14. Move the programming switch (located on the rear panel of the transceiver) toward the right side (use a
pin).
15. Disconnect the USB cable from the transceiver and the personal computer.
16. Turn the external power supply ON.
17. Press and hold the [PWR/LOCK] key to turn the transceiver ON.
18. Reset the transceiver.
For details, see
"How to Update the MAIN Firmware" on page 4
19. Confirm the updated Firmware Version of the transceiver
For details, see "How to Confirm the Current Firmware Version of the transceiver" on page 2.
If there is a problem during the updating process, turn the transceiver OFF, turn the external power
supply OFF, and disconnect the DC cable from the transceiver. Then close the YFSW023 transfer
software, and try the complete update process again.
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