TOS5400 – Firmware Updater

Firmware Updater

This software is to update the firmware version of the TOS5400 Series.

Ver.

1.05

Last update

2026/10/08

Configuration

Target Products

  • TOS5401
  • TOS5402
  • TOS5403

Notes

Firmware Update

You can update the product’s firmware by using a USB memory device.

Download

Release Notes

Ver 1.05
2026-09-24

IFC1.05.0050/IOC1.04.0046

  • Resolved issues Fixed an issue where the number of digits displayed on the ammeter decreased in a specific range during withstanding voltage testing.
  • Improvement Optimized HPF operation during withstanding voltage testing to reduce false operation caused by noise.