How to change frequency (250HZ to 8KHZ)for LED controller?

FAQ
1

8KHZ:Press “OFF” button 1 time within 3 seconds and press “ON” button 5 times, Activated successfully once led light flashes 2 times quickly.

250HZ:Press “ON” button 1 time within 3 seconds and press “OFF” button 5 times, Activated successfully once led light flashes 2 times slowly.

Warm tips: user can change low frequency(250HZ) to avoid the beep noise from mains, checking video

2

How do you do this if your only controller is the K1? It doesn’t seem to work…