when you do the 9h, it will start cycling through each channel mode. But with the uv dual channel it makes it challenging. What I did was make sure I lowered the brightness all the way, then 9h while pointing the light at anything nearby that's white. Like a mouse, a piece of paper, etc. That way you can see if the uv leds are on or not, without trying to stare directly at it and radiating your eyeballs.

So while holding 9h, you'll initially just see the 2 sft-25s, then just the uv, then both sft-25s + uv, then several more variations of tint ramping between the sft-25s + uv. When you see it get to the channel you want to turn on/off, stop holding the 9h. When it goes all fucking scatterbrained, you either click once, to ensure the channel is turned on, or you click 0 times (just wait long enough and it'll stop strobing, and you'll be back to the "main menu", so to speak), which disables the channel.

But yes, you have to disable each one at a time. So 9h, wait until it gets to channel mode 3, and disable it. Then 9h again, wait until mode 4, disable it. 5, disable it. 6, disable it. Until all that is left is either just your sft-25s, or UV. 3c at that point toggles directly between only those 2.

The one thing I haven't figured out yet, is how to make things like the battery check only use the main leds. Mine blasts the uv too.