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

*Firmware version 1.0.6 updated on June 20, 2025

• Fixed the issue where using multiple Bluetooth devices on macOS 15.5 would cause lag.

*Firmware version 1.0.3 updated on November 14, 2024

• Fix driver-related bugs and support the latest Web Launcher.
• Reduce power consumption in 2.4G mode.
• Improve accuracy of battery level display.
• Optimize wireless performance to enhance stability.
• Reduce button latency.

*Firmware version 1.0.5 updated on May 14, 2025

• Fix driver-related bugs and support the latest Web Launcher.
• Reduce power consumption in 2.4G mode.
• Improve accuracy of battery level display.
• Optimize wireless performance to enhance stability.
• Reduce button latency.

*Firmware version 1.0.4 updated on April 03, 2024

*Firmware version 0.1.4r updated on  May 9, 2025

• Fixed an issue where several multimedia control keys configured via Launcher in BLE mode did not function on macOS.
• Reduced RF standby power consumption and fixed an issue where connection parameter requests failed on the latest macOS, causing higher standby power usage.
• Optimized RF performance and improved stability of interactions with the wireless Web Launcher.
• Added safe DFU (Device Firmware Update) mode.

*Firmware version 0.1.3r updated on October 12, 2023

*Firmware version 1.2.5r updated on June 18, 2025
• Fixed the issue where using multiple Bluetooth devices on macOS 15.5 would cause lag.

*Firmware version 1.2.4r updated on May 09, 2025
• Fixed the issue where certain macOS shortcuts configured via Launcher were not functional in Bluetooth mode.
• Fixed the issue where the cursor would sometimes freeze in standby mode.
• Support Safe-DFU mode.
• Reduce power consumption in 2.4G Mode.

*Firmware version 1.2.3r-3 updated on February 21, 2025
• Fixed the issue where certain macOS shortcuts configured via Launcher were not functional in Bluetooth mode.
• Fixed the issue where the cursor would sometimes freeze in standby mode.
• New feature added for DFU mode.

*Firmware version 1.2.2r updated on November 14, 2024
• Fix driver-related bugs and support the latest Web Launcher.
• Reduce power consumption in 2.4G mode.
• Improve accuracy of battery level display.
• Optimize wireless performance to enhance stability.
• Reduce button latency.

*Firmware version 1.0.5 updated on May 14, 2025

• Fixed an issue where several multimedia control keys configured via Launcher in BLE mode did not function on macOS.
• Reduced RF standby power consumption and fixed an issue where connection parameter requests failed on the latest macOS, causing higher standby power usage.
• Optimized RF performance and improved stability of interactions with the wireless Web Launcher.
• Added safe DFU (Device Firmware Update) mode.

*Firmware version 1.0.4 updated on April 12, 2024

*Firmware version 1.0.4 updated on August 14, 2025

• Added new driver features: profile switching, polling rate, DPI stage settings, and 20k FPS configuration.
• Added wireless pairing over USB in the driver (requires receiver version 0.1.6 or above).
• Added RF channels to improve anti-interference when using multiple devices simultaneously (requires receiver version 0.1.6 or above).
• Optimized side wheel performance.

*Firmware version 1.0.2 updated on August 04, 2025
• Added new driver features, including profile switching, polling rate adjustment, and DPI level customization.
• Optimized scroll wheel algorithm and acceleration algorithm.Fixed side scroll wheel rollback issues.
• Fixed issue where the BLE host indicator would randomly turn off.
• Fixed slow switching or unexpected restarts caused by mode switching or repeated plugging/unplugging of the USB charging cable.

*Firmware version 1.0.2  updated on August 06, 2025
• Added new driver features: profile switching, polling rate adjustment, and DPI stage customization.
• Optimized scroll wheel and acceleration algorithms.Fixed side scroll rollback issue.
• Fixed BLE issue where the Bluetooth host indicator randomly turns off.
• Fixed restart or slow mode switching caused by toggling modes or repeatedly plugging/unplugging USB charging cable.

*Firmware version 1.0.2  updated on August 06, 2025
• Added new features: profile switching, polling rate adjustment, and DPI level customization.
• Optimized scroll wheel algorithm and acceleration performance.
• Fixed side scroll wheel rollback issue.
• Fixed BLE indicator randomly turning off when switching Bluetooth hosts.
• Fixed slow switching or restart issues caused by mode switching or repeatedly plugging/unplugging USB charging cable.

*Firmware version 1.0.1  updated on August 08, 2025
• Added new driver features: profile switching, polling rate adjustment, and DPI stage customization.
• Optimized scroll wheel and acceleration algorithms.Fixed side scroll rollback issue.
• Fixed BLE issue where the Bluetooth host indicator randomly turns off.
• Fixed restart or slow mode switching caused by toggling modes or repeatedly plugging/unplugging USB charging cable.
• Optimize anti-interference performance when using multiple devices simultaneously.
• Added wireless pairing over USB function.

• Fixed the issue where certain macOS shortcuts configured via Launcher were not functional in Bluetooth mode.
• Reduced standby power consumption in wireless mode.
• Support Launcher in 2.4G wireless mode.
• Safe-DFU feature added.

*Firmware version 1.0.1  updated on August 08, 2025
• Added new driver features: polling rate adjustment, and DPI stage customization.
• Added the ability to switch profiles and polling rates via buttons.
• Optimize anti-interference performance when using multiple devices simultaneously.
• Added wireless pairing over USB function.
• Fixed the slow mode switching caused by USB reset.