Brightness
Confirm the brightness by pressing the button MENU.
Backlight timer
The screen will black out if it reaches the time as what you set in the backlight timer.
Options available: 10 seconds, 20 seconds, 30 seconds, 60 seconds, Always on
The setting helps to save power.
Sleep Timer
You can set 1-120 minutes to shutdown the mp3 player.
If you set the sleep timer, the mp3 player auto turns off once it reaches the time limit you set.
This setting helps to your listening time, after all, prolonged listening to music can damage your
ears.
Off Timer
You can set 1-15 minutes to shutdown the mp3 player.
If you set the off timer, the mp3 player auto turns off once it reaches the time limit you set.
Information
Here you can check the Model, Software version, modified time and disk space.
Auto upgrade
Please contact us to get the latest HEX file at first.
Email us or visit the official website https://mechen.com.cn/gjsj
Or, download the firmware from the google drive:
https://drive.google.com/drive/folders/1ETqgbY5gWTMUyGjbLjJ5fA4s1eZWYbnp?usp=share_link
When you get the HEX file, simply save it to the mp3 player and select auto upgrade in the
settings.
The video may help you to understand better:
https://youtu.be/8q8YqL5BAJc
Attention:
There should be one and only MECHEN_M30.HEX in the mp3 player, or the upgrade would be
failed.
Format device
It will delete all the data if you choose this setting, please think twice.
Factory settings
It restore the factory settings, please be careful to use it.
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