Hi @igorpl, did you previously upgrade your Tone Board’s firmware? Some users are experiencing problems with the firmware found on https://dl.khadas.com. @Terry will fix the issue soon.
In the meantime, you can attempt to re-flash using this older firmware from: No sound after firmware upgrading (Direct link: Google-Drive)
Using the Windows 10 compatible driver update software to re-flash your Tone Board will work.
In the meantime, I would like to remind all users of the Tone Board to refrain from using this firmware to re-flash your Tone Board: https://dl.khadas.com/Firmware/ToneBoard/Khadas_Tone_Board_dfu-2018-1226-Upgrade-Firmware.zip