False triggering in active mode WTconfig

[golkit1]

I'm triggering the wav trigger using a movement sensor that goes HIGH when movement is detect.
I set the init file as follow:

Trigger: 1
Hardware Interface: Active
Type: Edge
Function: Normal
Invert: tick
Re-trigger: untick
Polyphonic: untick
loop: untick

most of the time it works as it should: new triggers will not restart the track until finished. Sometime it happens that new triggers are indeed restarting the track, which is not desired.
What could be the issue?

[robertsonics]

Please ensure that you are using the most recent firmware which, is v1.34, available here:

https://www.robertsonics.com/downloads

[golkit1]

I tick the "Lock voice" box and it seems to solved it. Does it make sense?
Regarding the latest firmware. Is it possible to update via the init file? I don't have USB to TTL serial adaptor - is there other way I can update the firmware?

[robertsonics]

If locking the track does it, then yes that's another way to accomplish what you want. I do think the fact that the other method occasionally does not work is a bug that was fixed in a subsequent firmware update.

Unfortunately, you do need a USB-to-TTL Serial adaptor to update the firmware. The update is only possible through the STM serial bootloader.