Firmware Update Utility (IST PLUS Series)

Last update：2026.06.15

Version	Ver.1.1.0
Compatible model/OS	Windows 10 / Windows 11 / macOS For the supported OS of the mouse itself, please check each product page or product package. * Windows 10 (32-bit) is not supported. * Please select the appropriate file from the download links below according to your OS.
Compatible products	IST PLUS Series M-IT10MR series M-IT11MR series ELECOM Bridge E Receiver Series M-ER10 series

Description

This software is a firmware update utility that updates the firmware of the IST PLUS (M-IT10MR / M-IT11MR series) main unit and its dedicated receiver in a single operation.

Download

Be sure to read the software license agreement carefully before downloading the file. Downloading the file assumes that you agree to this agreement.

◀Table can be scrolled.

Version	Release Notes	Supported OS	Download (File Size)
1.1.0 (Latest)	Initial release IST PLUS（M-IT10MR / M-IT11MR series）ver.1.1.0 * This is a required update for use of Mouse Assistant features. Fixed issue where certain features failed to function properly after being assigned to buttons or wheel. Fixed issue causing slow security code issuing during pairing. Added support for firmware updates with ELECOM Bridge E receivers connected. Fixed issue preventing proper pairing and Mouse Assistant operations when multiple devices are connected. ELECOM Bridge E（M-ER10 series）ver.1.1.0 * This is a required update for use of Mouse Assistant features. Fixed issue where pairing with receivers would occasionally fail. Fixed issue causing slow security code issuing during pairing. Fixed issue where input would not properly register when multiple devices were connected and any of them entered sleep mode. Added support for firmware updates with ELECOM Bridge E receivers connected. Fixed issue preventing proper pairing and Mouse Assistant operations when multiple devices are connected.	Winbdows x64	Download ISTPLUS_v110_Update_Win_x64.zip Approximately 3.7MB
Winbdows ARM	Download ISTPLUS_v110_Update_Win_ARM64.zip Approximately 3.7MB
macOS	Download ISTPLUS_v110_Update_mac.zip Approximately 2.9MB

Version

Release Notes

Supported OS

Download
(File Size)

1.1.0
(Latest)

Initial release

IST PLUS（M-IT10MR / M-IT11MR series）ver.1.1.0

* This is a required update for use of Mouse Assistant features.

Fixed issue where certain features failed to function properly after being assigned to buttons or wheel.
Fixed issue causing slow security code issuing during pairing.
Added support for firmware updates with ELECOM Bridge E receivers connected.
Fixed issue preventing proper pairing and Mouse Assistant operations when multiple devices are connected.

ELECOM Bridge E（M-ER10 series）ver.1.1.0

* This is a required update for use of Mouse Assistant features.

Fixed issue where pairing with receivers would occasionally fail.
Fixed issue causing slow security code issuing during pairing.
Fixed issue where input would not properly register when multiple devices were connected and any of them entered sleep mode.
Added support for firmware updates with ELECOM Bridge E receivers connected.
Fixed issue preventing proper pairing and Mouse Assistant operations when multiple devices are connected.

Winbdows
x64

Download

ISTPLUS_v110_Update_Win_x64.zip
Approximately 3.7MB

Winbdows
ARM

Download

ISTPLUS_v110_Update_Win_ARM64.zip
Approximately 3.7MB

macOS

Download

ISTPLUS_v110_Update_mac.zip
Approximately 2.9MB