How to flash the firmware and factory reset the Keychron M3 mouse
(1) If everything is working with your mouse, please don’t flash the firmware. There is a chance it can damage your mouse.
(2) This guide is for Keychron M3 users only. Please flash the firmware on your Windows PC. (We are working on making it accessible for Mac systems.)
(3) If you have multiple Keychron mice, please flash each one by one. Do not plug all the mice into the computer at the same time.
The firmware update includes two parts:
(1) Flash the firmware for the Type-A/Type-C 2.4 GHz Receiver;
(2) Flash the firmware for the M3 Mouse.
Please follow the instructions to flash the Receiver's firmware first.
Flash the firmware for the Type-A/Type-C 2.4 GHz Receiver
Step 1: Download and open the update tool (Keychron Firmware Updater).Download the Keychron Firmware Updater (Windows)
Step 2: Plug the Receiver (Type-A or Type-C) into your Windows PC.
Note: Make sure to connect only one Keychron receiver to your computer. If you have multiple Keychron receivers, please flash each one by one.
Then click on the 'Get Version' button to check your current receiver firmware version.
Click on the 'Browse' button, select the firmware you have just downloaded, and then click on the 'Update' button to start flashing the firmware.
Step 4: Now you have updated the Receiver firmware successfully. You can click on the 'Get Version' button again and check to see if the receiver firmware is the latest version kc.1.1r-3.
Please follow the instructions to flash the mouse firmware.
Flash the firmware for the M3 Mouse.
The steps are the same as above. Please download the M3 mouse firmware below and repeat Steps 2 to 4.Download M3 Mouse firmware
*Firmware version 1.2.0r-6 updated on June 19, 2023
(1) Make sure your mouse is connected to the PC with the cable that came with the box. If you are using a third-party cable, please make sure it can pass data as some cables can only be used for charging.
(2) Ensure only one Keychron mouse is connected to your computer. If you have multiple Keychron mice, please flash each one by one.
Factory reset the M3 mouse
After the receiver and mouse have finished the flash, please factory reset the M3 Engine software.Download M3 Engine Software (Windows)
*Software version 1.0.4 updated on June 12, 2023
Check out the screenshots below for the factory reset steps.
Note: After factory resetting, you need to reconnect the mouse to your device via the 2.4GHz receiver or re-pair via Bluetooth.
*Refer to the following instructions to learn how to connect the M3 mouse to your device in 2.4GHz/Bluetooth mode.