Kenwood TS-990S
firmware v1.01
Kenwood · Released Mar 29, 2013 · First seen Sep 6, 2026
Source:
kenwood.com
v1.01 is not the latest firmware for the Kenwood TS-990S: the current version is v1.26 (September 25, 2023). Go to v1.26
In short — summary by updatemystuff.com
Adds audio output terminal configuration menus and fixes incorrect SWR readings during TX TUNE with analog meters.
- Added audio output configuration menus for USB, ACC2, and Optical terminals with Normal/Reversed/Mixed options
- Fixed incorrect SWR value display during TX TUNE when using Type2 or Type3 analog meters
Written from Kenwood's release notes, which are printed in full below.
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What's in this update
The following feature is updated.
- Adds the following menus for audio output terminal configurations.(USB, ACC2, Optical)
Menu No.7-16 "USB: Audio Output Configuration"
Menu No.7-17 "ACC 2: Audio Output Configuration"
Menu No.7-18 "Optical: Audio Output Configuration"
You can set the value to "Normal"(default), "Reversed", or "Mixed" for each output terminal above.
For details, please refer to the revised Instruction Manuals .
The above configurations are necessary when operating the TS-990S with KENWOOD NETWORK COMMAND SYSTEM.
The following symptom is revised.
- While in TX TUNE, incorrect SWR value is indicated when Type2 or Type 3 (analog type) meter is configured.
Applicable units :
The firmware update is applicable to the following units.
Model: TS-990S
Serial numbers: From S/NO.B32xxxx through S/NO.C39xxxxx approx.
Notes
:
You can find the serial number imprinted on the rear panel model name label; it consists of an 8-digit number beginning with "S/NO."
:
You can check the firmware version of your TS-990S by pressing [M.IN](Memory) + Power ON. After startup, the Firmware Update screen appears and shows the firmware version.
- There are two [M.IN] keys on this transceiver; one is for Memory and the other is for Quick Memory. To view the firmware version, ensure you use the [M.IN](Memory) key.
Firmware updating procedure using a USB flash drive
1)
Download the firmware file "TS-990_V126.zip" onto your PC.
- Save the downloaded firmware file "TS-990_V126.zip" to a USB flash drive.
- You must store the firmware file "TS-990_V126.zip" in the root directory of the USB flash drive without extracting the zip file, otherwise the firmware cannot be updated.
- Press and hold the [M.IN](Memory) key, then turn the transceiver ON.The transceiver starts up with the Firmware Update screen after the start screen appears. You can verify the current firmware version.
- Insert the USB flash drive containing the firmware file in the USB-A connector on the front panel. The firmware updating progress bar appears on the main screen. Upon completion of the firmware updating, "The firmware update is completed" appears on the main screen.
- Turn the transceiver OFF.
- Remove the USB flash drive.
- Turn the transceiver ON again.
The transceiver restarts with the new firmware enabled.
Firmware updating procedure using a PC connected via a USB cable
1)
Download the firmware file "TS-990_V126.zip" onto your PC.
- Connect a USB cable, extended from your PC, to the (USB-B) connector on the rear panel.
- The firmware cannot be updated even if a PC and the COM connector was connected using an RS-232C cable.
- Press and hold the [M.IN](Memory) key, then turn the transceiver ON. The transceiver starts up with the Firmware Update screen after the start screen appears. You can verify the current firmware version. Upon detection of the transceiver by your PC, the transceiver is distinguished as a removable memory device named "TS-990".
- Drag and drop the firmware zip file onto the "TS-990" removable memory device without extracting. The firmware updating progress bar appears on the main screen. Upon completion of the firmware updating, "The firmware update is completed" appears on the main screen.
- Turn the transceiver OFF.
- Turn the transceiver ON again.
The transceiver restarts with the new firmware enabled.
Notes
:
Depending on the number of CPUs being updated, the time necessary for updating may vary. It can take 20 to 30 minutes to update the firmware.
:
If a message notifying you of an update failure appears during the firmware updating, refer to the Instruction Manual page 18-4. (Troubleshooting.)
Downloading
Only if you agree to the following "Usage Notes", click "Agree" and download the file. (If you do not agree, you will not be able to download the file.)
Usage Notes
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JVCKENWOOD Corporation does not warrant that quality and functions of this software comply with each user's purpose of use of this software, and unless specifically described in this document, JVCKENWOOD Corporation shall be free from any responsibilities to any defects and indemnities to any damages or losses.
Selection and installation of this software shall be done by the user's own designation.
The user shall take full responsibility for the use and effects of this software.
・
JVCKENWOOD Corporation shall be free from any responsibilities for any incidental losses or damages, such as missing communications or a call opportunity, caused by a failure or performance error of this software.
・
The software embedded in the product consists of a multiple number of and individual software components.
Title to and ownership of copyrights for each software component is reserved for JVCKENWOOD Corporation and the respective bona fide holder.
Any copying, reproducing or disclosing on an Internet website of the JVCKENWOOD Corporation copyrighted software components is strictly prohibited.
Furthermore, any reselling, assigning or transferring of the JVCKENWOOD Corporation copyrighted software components is also strictly prohibited without embedding the software in the product memories.
・
The software employs the software component in accordance with the End User License Agreement (hereinafter referred to as the "EULA") stipulated by JVCKENWOOD Corporation and/or the respective bona fide holder.
There is free software stipulated and governed by the "EULA", and this, a distribution condition of the software component in the executable format under the terms and conditions contained in the GNU General Public License or Lesser General Public License (hereinafter referred to as the "GPL/LGPL"), requires to make the source code for the relevant software components available.
Access the URL below for details of the software component stipulated in the "GPL/LPGL". https://www.kenwood.com/gpl/e.html Please note that we are unable to answer any inquiry relating to the contents, etc. of the source code.
Please note that any software component licensed under "EULA" which is not subject to "GPL/LGPL", and those developed or created independently by JVCKENWOOD Corporation shall not be subject to the requirement for provision of the source code.
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Important notice about software can be displayed in the transceiver's menu below. Advanced Menu No.29 "Important Notices concerning Free Open Source" The GPL/LGPL license agreement can be displayed in the transceiver's menu below. Advanced Menu No.30 "About Various Software License Agreements"
TS-990_V126.zip : 13.0MB download
TS-990_V126.zip : 13.0MB download
(The latest version includes all previous updates.) TS-990S Firmware Version 1.26 (September / 2023)
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