TR-75nw Firmware Update Tool

This is an update program for the TR-75nw firmware.


This is an update program for the TR-75nw firmware.

Compatible ProductsTR-75nw
VersionVer. 1.07 (March 29, 2022)
File Nameapp-tr75nw-firm-107-all.exe
File Size7.31 MB
Operating EnvironmentCompatible OS *1
Microsoft Windows 11 64bit English
Microsoft Windows 10 32/64bit English
CopyrightT&D Corporation
ReplicationCopying to another media is expressly forbidden
*1: For installation, it is necessary to have Administrator (Computer Administrator) rights.

How to Check your TR-75nw Firmware Version

See below for how to check your firmware version depending on your interface method.

T&D WebStorage Service :

  1. From the [Devices] menu, open the settings window by clicking the [Settings] button for the desired device.
  2. Read off the "Firmware" version next to the "Serial Number" located at the top of the window.

PC :

  1. Open T&D software "TR7 for Windows" and connect your device via USB to the computer.
  2. Read off the "Firmware Version" value located at the lower left on the screen.

Firmware Update Procedure - When Using T&D WebStorage Service

  • All recorded data will be deleted by updating the firmware. Please make sure to download all necessary data before update.
  • In the case of when XXX does not represent the latest firmware version, it means the update has failed. In the case of an update failure, please use the update tool as shown in the procedure below.

When using T&D WebStorage Service, you do not need to download the update tool.
By following the device reset procedure shown below, the new firmware will be installed automatically.

Reset Procedure for Automatic Firmware Update

  1. When the recording is in progress (REC mark displayed on LCD), stop the recording by pressing and holding the REC/STOP button for at least 3 seconds.
  2. Turn off the device by pressing and holding the PWR button.
  3. Pressing the DISPLAY, INTERVAL, and REC/STOP buttons at the same time, hold down the PWR button until all LCD display segments appear, then release all buttons.

After resetting the device, the installation of the new firmware will be completed in about 5 seconds. When the firmware is updated successfully, [LXXX] will appear on the LCD screen. (The XXX represents the version number of the firmware.)

Firmware Update Procedure - When NOT using T&D WebStorage Service

Please read and agree to the User Agreement at the bottom of this page, and download the TR-75nw firmware update tool to perform the update.

Before connecting a USB cable, make sure that the PC has the USB device driver installed. (By installing the application "TR7 for Windows", the USB device driver will also be installed.)

  1. Connect the device via USB to the computer.
  2. Open the downloaded "TR-75nw Firmware Update Tool".
  3. Follow the instructions on the screen to update the firmware.

If the firmware is updated successfully, [LXXX] will appear on the device LCD screen when the power is turned on. The firmware update should take only a few minutes to complete.

Revision History

Ver. 1.07 March 29, 2022

  • Added a function to output the recording status of the device on the T&D WebStorage Service.
  • When the recording mode is set to One Time, the REC mark on the LCD now disappears automatically when the logger reaches full capacity.
    *It is no longer necessary to use the REC/STOP button to turn off the REC mark manually when FULL appears on the logger.
    Please note that pressing the REC/STOP button once the REC mark has disappeared will result in deletion of the recorded data and will start a new recording session.

Ver. 1.06 June 17, 2021

  • When returning from Sleep Mode(*), auto-upload of previously recorded data is performed. After that, the logger automatically resumes recording and auto-upload of data.
    *Sleep Mode is a feature that stops recording when battery power is low and protects recorded data.

Ver. 1.05 November 19, 2020

  • Fixed a problem that occurred after replacing batteries during a sensor error status condition, where a sensor error notification could be incorrectly sent when an upper or lower limit warning was transmitted.
  • Added the Group tag to the warning data (xml file).

Ver. 1.04 September 02, 2019

  • Added low battery warning to the warning settings menu.

Ver. 1.03 April 11, 2018

  • Fixed a problem that caused the logger to display and record the internal temperature for cold junction compensation instead of the actual sensor measurement.

Ver. 1.02 December 19, 2017

  • Fixed an issue where temperature measurement occasionally did not automatically start upon turning on the logger.

Ver. 1.01 September 08, 2017

  • Fixed a problem that caused a warning not to be detected in the following conditions:
    • When operations such as recording start or warning setting changes are performed on the logger whose battery power at that time was too low to send a warning.
    • When a warning occurs on the logger when resetting the network connection due to network error, etc.
  • When updating the firmware via T&D WebStorage Service, the operation log is now only recorded and displayed once upon successful completion of the update.
  • When the logger enters sleep mode (“SLP” display on LCD), the operation log is now only recorded and displayed once.
  • When the battery runs low and automatic data upload stops, the error log is now only recorded and displayed once.

User Agreement


  1. Although T&D Corporation has carried out operational tests on TR-75nw Firmware Update Tool, hereafter referred to as "the software", we cannot guarantee that all operations will work properly under all conditions.
  2. T&D Corporation shall not accept any responsibility for any damage whether direct or indirect that results from the usage of the software.
  3. Specifications of the software may be subject to change and service may be terminated without advance notice to the user. In such a case T&D Corporation shall not be responsible for any damages whether direct or indirect from the inability to use the software.
  4. T&D Corporation has no obligation to correct any defects found in the software.


  1. All copyrights for the software, including all of the programs and all related documents, are the sole property of T&D Corporation.
  2. The software is for use free of charge. Redistribution is permitted as long as it is to others for non-profit. In this case, all terms and conditions as written in the above disclaimers automatically transfer and hold true and valid for the party to which the program was redistributed. Please note that if you wish to commercially redistribute the program please contact your local distributor or T&D representative.
  3. The reprinting or redistribution for commercial purposes whether in part or in whole, in magazines or as a part of any product is strictly forbidden without the expressed consent of T&D Corporation. Any inquiries concerning commercial redistribution should be directed to the Sales Department of T&D Corporation.
  4. Please do not attempt to make any changes or modifications to the software.
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