Note: When you click the links below to download the firmware, it indicates that you have already read and agreed to the  Open source licenses.

How to upgrade the M5：

Upgrade when the M5 is on: copy the firmware package to the Micro SD card root directory, then enter the System settings, click the System updates and confirm;
Upgrade when the M5 is off: After copying the firmware package to the Micro SD card root directory, hold the volume + and power button when the M5 is off to enter the upgrade mode and release the button.

How to check the firmware version of M5:
Settings-System settings-About M5-FWX.X.X

Updated at 2020-09-04

Note: If the firmware version of your M5 is 1.0.0/1.1.0/1.1.1, please update the M5 to FW1.2.0/FW1.3.2 before update to FW1.4.7.

M5 FW1.4.7 Firmware Download: Click here

The following changes and improvements have been made to the FW1.4.7 compared to the FW1.3.2 on M5:

1. Added a battery level display icon on the lock screen clock page.
2. Added a new option of "Long press volume button" in the System Settings menu, where users can decide which function to achieve by long pressing the volume button under bright or off screen. (Adjust volumes, switch tracks, fastforward/rewind are available.)
3. Added a new function of Replay Gain (in the Playing Settings menu). 
4. Added a new function of user defined EQ.
5. Fixed the issue where the system would be stuck at the Welcome page after the device turned on.
6. Fixed the issue where cue files could be repeatedly put in My Favorites.
7. Fixed the issue where errors might happen when switching / skipping tracks and in UI display. 
8. Fixed the issue where specific operations might cause a frozen system.
9. Miscellaneous bug fixes and performance improvements.

Note: For the stability improvement of the M5 system, the software has readjusted the system partitions. So, it would be impossible to revert the firmware once upgrading to the newest one. (A prompt of UPDATE FAIL would pop up if reverting the firmware.)

Updated at 2019-10-10

M5 FW1.3.2 Firmware Download: Click here

The following changes and improvements have been made to the FW1.3.2 compared to the FW1.2.0 on M5:
1. Added quick search function in track lists;
2. Added 'Recently Added' playlist;
3. Added support for external m3u playlists;
4. Added support for swiping on a long track name to view it in full length;
5. Fixed issue where some tracks might be played improperly;
6. Fixed issue where the date displayed in the lock screen was still in 24-hour format even after setting it to 12-hour format;
7. Improved the system stability;

M5 FW1.2.0 Firmware Download: Click here

The following changes and improvements have been made to the FW1.2.0 compared to the FW1.1.1 on M5:
1. Added double-tap to turn the screen on (need to be set in the system settings - double-tap the screen to "Turn the screen on"; please note that the standby power consumption will increase slightly when using this function)
2. Added raise hand to turn the screen on (need to be set to "ON" in the system settings - raise hand to turn the screen on ; please note that this function does not take effect when M5 enters standby or Bluetooth receiver mode)
3. Added the function of manually deleting the step counter history data (swipe to the left from the right edge of the display on the step counter record interface to pop up the delete menu)
4. Bluetooth transmitter mode and local playback will now memorize the respective volume independently. Adjusting the volume of the M5 will no longer affect the Bluetooth mode volume.
5. Fixed issue where special operation in Bluetooth transmitter mode may cause sound jamming problem
6. Fixed issue where can not search for Bluetooth devices after entering the Bluetooth firmware upgrade interface and exiting it when the M5 is in Bluetooth transmitter mode
7. Fixed issue where songs were added to the Media library repeatedly when the Media library was updated multiple times under a specific operation
8. Fixed issue when using the M5 with the watchband, press the power button may be misidentified as a double press
9. Modify the volume adjustment interface UI display, and the quick start manual content at local and storage information page
10. Optimization of other function

Bluetooth firmware update: 
Please check the Bluetooth Firmware version of your M5 first (Go toM5 Settings -> System Settings -> About Device, and quick click the NBoption for about 10 times).If your Bluetooth Firmware version is already the latest 1.1.1/1.1.2, please donot update again.

Instruction of Upgrading the M5 Bluetooth Firmware:Click here

M5 Bluetooth Firmware(1.1.2):Click here