The new firmware FW1.0.2 for M21 is now available! Unlock more Hifi fun!

M21 firmware download link: Click here

How to update the firmware of M21: Click here

FW1.0.2 firmware for the FiiO M21 is now available-Unleash a New Dimension of Music with Fresh Themes, Features & Controls.

3 spectrum mode, 8 VU meter mode, and 4 cassette themes are added!

Music isn’t just about hearing—it’s about seeing the 'rhythm' come alive. Watch the spectrum dance to the beat, feel the sophisticated movement of the VU meter’s needle, and immerse yourself in the retro cassette-themed time travel. This stunning sensory experience unlocks the true charm and vitality of music.

Note: Theme 5/6 needs to work with the latest 3.2.9 version of FIIO Music: Click here

With a double-click of the previous/next track button on the cassette case, you can instantly switch between different themes and give your M21 a fresh new 'skin'!

Without opening the cassette case, a long press of the power button for 5 seconds will turn off the device. The need expressed by you has been addressed.

Without opening the cassette case, the device can power on automatically when USB is connected.

Go to Settings - Global to enable USB auto power-on (disabled by default).

Go to Settings - Battery to customize maximum charging percentage.

Go to Settings -Global - Self-defined Button Functions to choose different button function schemes; when combined with the screen rotation function, buttons will rotate accordingly.