How do I update firmware on the MX Master 3S?

by Jax Dalton · Published 30/10/2025 · Updated 30/10/2025

Applies to / Last updated
Logitech MX Master 3S • Logi Options+ on Windows 10 or 11 and macOS 12 or later • Logi Bolt receiver optional • Last updated: 30 October 2025

Problem

You want to update the MX Master 3S firmware to fix bugs, improve performance, or add compatibility. You are unsure how to start, what to prepare, or how to recover if the update stalls, fails, or asks you to connect a cable.

Solution

Use Logi Options+ to check for and install device and receiver firmware with the mouse charged and the connection stable. Keep the computer awake, avoid switching Easy Switch channels, and plug in a USB C cable if requested. If the update fails, reboot, stabilize the radio link or use a wired connection, and retry. Update the Logi Bolt receiver as a separate step if offered.

Step by step instructions

1) Prepare mouse and computer

Charge the MX Master 3S to at least 50 percent.
Close other mouse utilities and screen recorders that capture input.
If available, connect the USB C cable so the mouse stays powered and awake.
Keep the mouse close to the computer. If you use a Logi Bolt receiver, place it on a short USB extension near the mouse.

2) Open Logi Options+ and check for updates

Launch Logi Options+ and select MX Master 3S.
Look for an Update available prompt or open the device menu and choose Firmware Update.
Review the release notes so you know what will change.

3) Run the mouse firmware update

Click Update and follow the prompts.
Do not switch Easy Switch channels during the process.
Keep Bluetooth or Logi Bolt connected and avoid moving far from the computer.
If prompted to connect USB C, plug in the cable and continue.
Wait for Update complete before interacting with the mouse or Options+.

4) Update the Logi Bolt receiver if offered

Insert the receiver into a direct USB port or a short extension.
In Options+, start the receiver update and keep the mouse nearby.
Do not remove the receiver until the update completes.

5) Verify and test

In Options+, confirm the firmware version shows as current.
Test pointer movement, scroll, thumb wheel, and all mapped buttons.
Confirm your Global and app specific profiles are still active.

6) If the update fails or stalls

Give it a few minutes to ensure it is not still processing.
Cancel if possible, close Options+, and reboot the computer.
Toggle the mouse Off then On, reconnect, and retry the update.
Switch the connection method for the retry. If you used Bluetooth, try Logi Bolt. If you used Logi Bolt, try Bluetooth or stay wired over USB C.
Temporarily disable VPN and ensure Options+ is allowed through the firewall.
Move the receiver to a front port or short extension to reduce interference.
If the host is heavily loaded, close background apps and try again.

Optional methods or tools

Wired USB C during the update for maximum stability.
Short USB extension for the receiver to improve signal quality.
Local administrator account on managed computers that restrict device updates.
Stable power plan on laptops so the system does not sleep mid update.

Best practices or tips

Update Logi Options+ first, then update the mouse and receiver.
Sign in to Options+ and enable cloud backup so mappings are easy to restore after reinstalls.
Run updates when the laptop is on AC power and not set to sleep for at least ten minutes.
Avoid congested USB hubs and busy USB 3 ports during the update. Prefer a direct port or a short extension.
After a successful update, restart Options+ and the operating system if behavior feels off, then retest.

Keeping firmware current helps resolve stutter, improve battery reporting, and refine scroll behavior. The most important factors for a smooth update are a charged mouse, a stable connection, and uninterrupted power. A quick wired connection removes most risk and is worth using if you have had update issues before.

If something goes wrong, a clean reboot and a different connection method usually succeed. Place the receiver close, keep VPN off during the process, and let Options+ complete the flash without switching channels. With these steps, firmware updates are straightforward and help your MX Master 3S deliver consistent performance.