How to flash the firmware and factory reset the Lemokey wireless mice

Note:
(1) This guide is applicable to the following models:
Keychron 2.4G wireless mice (8K polling rate version): G1, G2.

(2) Please flash the firmware on your Windows PC. (We are working on making it accessible for Mac systems.)

(3) If you have multiple Lemokey mice of the same model, please flash each one by one. Do not plug all the mice into the computer at the same time.

(4) If everything works fine with your mouse, please don’t flash the firmware. There is a chance it can damage your mouse.

The firmware update includes two parts:
(1) Flash the firmware for the mouse;
(2) Flash the firmware for the Type-A/Type-C 2.4 GHz Receiver.

Please follow the instructions to flash the mouse firmware first.

Flash the firmware for the mouse

Step 1: Download and open the update tool (Lemokey Firmware Updater).

Step 2: Plug the mouse into your Windows PC.

Note:
(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 Lemokey mouse is connected to your computer. If you have multiple Lemokey mice of the same model, please flash each one by one.

Then click on the 'Get Version' button to check your current firmware version.

Step 3: Please download the correct firmware for your mouse.

G1 Mouse

G2 Mouse

Step 4: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 5: Now you have updated the firmware successfully. You can click on the 'Get Version' button again and check to see if it is the latest version.

Next, please follow the instructions to flash the firmware for the receiver.

Flash the firmware for the Type-A/Type-C 2.4 GHz Receiver

Please click the link below to download and flash the firmware:

How to Flash the Firmware for the Lemokey Receiver

Factory reset the mouse

After the receiver and mouse have finished the flash, please factory reset the mouse.

Note:
(1) After factory resetting, you need to reconnect the mouse to your device via the 2.4GHz receiver or re-pair via Bluetooth.

(2) Please refer to the mouse user manual to learn how to connect the mouse to your device in 2.4GHz/Bluetooth mode.