Tone2 Firmware request: Disable startup volume fade

Hi Khadas Team,

I’m using the Tone2 Maker Kit for a custom car audio build. The board is installed in the trunk and connects straight into my DSP. Since it sits completely hidden away, I control all my music volume directly on my phone, meaning the Khadas internal volume always needs to be at 100%.

Every time the car starts, the firmware takes about 8 seconds to slowly fade the volume all the way up to 100%.

In a car setup, my amplifiers and DSP turn on in 1–2 seconds, and my phone connects to BT Magic in ~4 seconds. When the music autoplays, the audio spends the next 4 seconds awkwardly ramping up from 50% to full blast.

I don’t have the compiler environment set up to build the firmware myself. Could someone please provide a pre-compiled firmware file that just forces the internal volume straight to 100% (step 32) instantly on boot without any fading or delay, or maybe just fade it much faster (in 1–2 seconds) to the last saved volume?

Thanks!