Yaesu FT-891 Use and care manual

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Use this software on a personal computer to update the rmware of the FT-891 transceiver after connecting
it to the personal computer.
Important
Before downloading the software, please read the “Important Notes” carefully.
Downloading or installing this software will signify your agreement with the stipulations of the “Important
Notes”.
“Transceiver” is used hereafter to refer to the Yaesu FT-891 transceiver.
CAUTION!
Be sure to conrm the model and the version of your transceiver before starting the update.
Writing incorrect rmware to the transceiver may cause abnormal operation or failure.
Important Notes
●All responsibility for the use of this software lies with the customer. Yaesu Musen Co., LTD cannot be held
responsible in any way for damage or loss which may be incurred by the customer as a result of using this
software.
●Copyrights and all other intellectual property rights for the software, as well as the software manual, are
the property of YAESU MUSEN CO., LTD.
●The revision, modication, reverse engineering, or decompiling of this software is prohibited.
Redistribution, transfer, and resale of downloaded les are also prohibited.
●Downloaded les are for personal use only.
● If you cannot perform the rmware update yourself, please consult with one of our sales sites or service centers.
System Requirements (Operating Environment)
Supported Operating Systems
●Microsoft®Windows®10
●Microsoft®Windows® 8.1
CPU
CPU which satises OS (operating system) requirements
RAM (System Memory)
Su󰀩cient RAM (system memory) to meet or exceed the OS (operating system) requirements
HDD (Hard Disk)
HDD (hard disk) with capacity to meet or exceed the OS (operating system) requirements
In addition to having su󰀩cient free space for the OS to operate, the program requires 20Mbyte or more of
free space.
Necessary PC interface
USB port (USB1.1/USB2.0)
Do not connect the USB cable to the personal computer and the FT-891 until after the “virtual COM port
driver” installation is completed, because the wrong driver may inadvertently be installed.
USB Driver (for Performing Version Updates via the USB Port)
Install the FT-891 virtual COM port driver on the personal computer before beginning the rmware update
process.
Please see “FT-891 USB Driver (Virtual COM Port Driver)” on the Yaesu Website for details (http://www.
yaesu.com/).
Cables
USB cable (type A to B)
Please have a commercially available cable ready.
Microsoft®, Windows®, Windows®8.1, Windows®10 are registered trademarks of Microsoft
Corporation in the United States and other countries.
FT-891
Firmware Update Manual

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How to Conrm the Current Firmware Version of the transceiver
MAIN, DSP, and LCD(Panel) rmware are available for FT-891 transceiver. Check the rmware version, and
perform rmware updates when needed.
1. Press and hold the [PWR/LOCK] key to turn the transceiver ON.
2. Press and hold the [F] key to activate the Menu mode.
3. Rotate the MULTI function knob to select Menu Mode “18-01 [MAIN VERSION]”, “18-02 [DSP VERSION]”
or “18-03 [LCD VERSION]”.
The rmware versions will be displayed on the LCD screen.
Regarding this Firmware
Before beginning the rmware update process, install the FT-891 virtual COM port driver on the personal
computer.
See “FT-891 USB Driver (Virtual COM Port Driver)” on the Yaesu Website for details (http://www.yaesu.
com/).
If the FT-891 virtual COM port driver has already been installed on the personal computer, skip this step and
proceed with the following rmware update steps respectively:
How to Update the MAIN Firmware (see page 4)
Downloading the MAIN Firmware
Transfer Software: YFSW023
Firmware: AH065_M_V****.SFL
How to Update the DSP Firmware (see page 7)
Downloading the DSP Firmware
Transfer Software: YFSW023
Firmware: AH065_V****.dat
How to Update the LCD(Panel) Firmware (see page 10)
Downloading the LCD(Panel) Firmware
Transfer Software: YFSW023
Firmware: AH065_P_V****.SFL

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How to Reset the Transceiver after updating the rmware (All Reset)
CAUTION!
The transceiver needs all settings to be reset immediately after updating the rmware.
Resetting the transceiver will clear all memories.
Please make a note of the memories (memory channel settings, etc) before updating rmware.
All Reset
1. Press and hold in the [F] key for one second to activate the Menu mode.
2. Rotate the MULTI function knob to select Menu Mode “17-01 [RESET]”.
3. Press the MULTI function knob, and then rotate the MULTI function knob to select “ALL”.
4. Press and hold the MULTI function knob to reset and automatically restart the transceiver.

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How to Update the MAIN Firmware
Preparation: Download the YFSW023 transfer software, and the AH065_M_V****.SFL rmware, to the
same folder on the PC, and Unzip the downloaded zip le.
1. Conrm that the transceiver is turned OFF, and then disconnect the DC power cord, and all other cables
from the transceiver unit.
2. Use a standard, commercially available USB cable, to connect the transceiver USB terminal and the PC
USB port.
(The FT-891 virtual COM port driver must be installed on the PC before connecting the USB cable.)
3. Move the programming slide switch (located on the rear panel of the transceiver) toward the left side (use
a pin).
4. Confirm that the external power supply is turned OFF, and then connect the DC power cord to the
transceiver.
5. Turn the external power supply ON.
This puts the transceiver into programming mode (the display will be blank).
NOTE:Do not touch the transceiver POWER switch.
6. Execute the YFSW023 transfer software on the PC.
7. Click the [Congure] button on the YFSW023 transfer software screen, and set the COM port number.
(Use 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/)).

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8. Click the [Browse] button on the YFSW023 transfer software screen, and then select the folder that
contains the previously downloaded, SFL transfer rmware le.
9. Click the [Main CPU] button on the YFSW023 transfer software screen.
Only the MAIN rmware le will be displayed.
10.Click the [WRITE] button on the YFSW023 transfer software screen.
The rmware transfer process will begin.

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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. Conrm the updated Firmware Version of the transceiver
For details, see "How to Conrm 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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How to Update the DSP Firmware
Preparation: Download the YFSW023 transfer software, and the AH065_V****.dat firmware, to the
same folder on the PC, and Unzip the downloaded zip le.
1. Conrm that the transceiver is turned OFF. Then disconnect the DC power cord, and all other cables from
the transceiver.
2. Use a standard, commercially available USB cable, to connect the transceiver USB terminal and the PC
USB port.
(The FT-891 virtual COM port driver must be installed before connecting the USB cable.)
3. Conrm that the programming slide switch (located on the rear panel of the transceiver) is set to the right
side.
4. Confirm that the external power supply is turned OFF, and then connect the DC power cord to the
transceiver.
5. Turn the external power supply ON.
6. Press and hold the [PWR/LOCK] key while pressing the [F] + [C] keys on the transceiver main panel, to
turn the transceiver ON in the DSP programming mode.
The below message will appear on the transceiver display.
7. Execute the YFSW023 transfer software on the PC.

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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 rmware (dat le).
10.Click the [DSP] button on the YFSW023 transfer software screen.
Only the dat rmware le will be displayed.

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11. Click the [WRITE] button on the YFSW023 transfer software screen.
The rmware transfer process will begin.
12. When the update is successful, the following screen will display. Then click the [OK]button.
13. Click the [Close]button on the transfer software screen.
14. Press and hold the [PWR/LOCK] key to turn the transceiver OFF.
15. Turn the external power supply OFF.
16. Disconnect the USB cable from the transceiver and the personal computer.
17. Turn the external power supply ON.
18. Press and hold the [PWR/LOCK] key to turn the transceiver ON.
19. Reset the transceiver.
For details, see "How to Reset the Transceiver after updating the rmware (All Reset)" on page 3.
20. Conrm the updated Firmware Version of the transceiver
For details, see "How to Conrm 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.

10
How to Update the LCD(Panel) Firmware
Preparation:Download the YFSW023 transfer software and the AH065_P_V****.SFL rmware to the
same folder on the PC, and Unzip the downloaded zip le.
1. Conrm that the transceiver is turned OFF. Then disconnect the DC power cord and all other cables from
the transceiver.
2. Use a standard, commercially available USB cable, to connect the transceiver USB terminal and the PC
USB port.
(The FT-891 virtual COM port driver must be installed before connecting the USB cable).
3. Conrm that the programming slide switch (located on the rear panel of the transceiver) is set to the right
side.
4. Confirm that the external power supply is turned OFF, and then connect the DC power cord to the
transceiver.
5. Turn the external power supply ON.
6. Press and hold the [PWR/LOCK] key while pressing the [BAND] + [FAST] keys on the transceiver main
panel, to turn the transceiver ON in the LCD(Panel) Firmware programming mode.
The TX/BUSY Indicator on the transceiver will glow orange.
7. Execute the YFSW023 transfer software on the PC.

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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 rmware (SFL le).
10.Click the [Panel CPU] button on the YFSW023 transfer software screen.
Only the LCD(Panel) rmware le will be displayed.
11. Click the [WRITE] button on the YFSW023 transfer software screen.

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The rmware transfer process will begin.
12. When the update is successful, the following screen will be displayed. Then click the [OK]button.
13.Click the [Close]button on the transfer software screen.
14.Press and hold the [PWR/LOCK] key to turn the transceiver OFF.
15. Turn the external power supply OFF.
16. Disconnect the USB cable from the transceiver and the personal computer.
17.Turn the external power supply ON.
18. Press and hold the [PWR/LOCK] key to turn the transceiver ON.
19. Reset the transceiver.
For details, see "How to Reset the Transceiver after updating the rmware (All Reset)" on page 3.
20. Conrm the updated Firmware Version of the transceiver
For details, see "How to Conrm 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.

2101-B