Zoom F8 firmware v6.40

Release to make the following changes in March 2025

Improved and added functions

1​. When files are split during long recordings, consecutive numbers are now added after file name take numbers.

2. If shut down while being used as an audio interface, it will resume audio interface mode automatically the next time it starts.
3. A f​unction has been added to show the SD card formatting menu when the power is turned on.

Fixed issue

1. Even if the voltage of the EXT DC IN connector drops below the shutdown voltage, the power supply will not switch to batteries.