Ensure your FA4 has at least 50% battery . A power failure during a firmware write can "brick" the device.
or be connected to a stable power source (USB charger) to prevent shutdown during the process. MicroSD Card: faudio fa4 firmware install
Even with new firmware, the FA4 often has a 3,000 file limit for library scanning. A workaround is to use ISO files or FLAC albums with cuesheets to manage larger collections. Ensure your FA4 has at least 50% battery
Updating firmware carries a risk of "bricking" your device if interrupted. Ensure you have the following: Your FA4 should have at least 50% charge . the FA4 often has a 3