Can't configure SEM-V two button landing gear

[DeanL]

I have a new GNX Dual THQ + SEM-V combo package. I've assembled, verified jumper positions, and updated to the 2.09.0 firmware. I installed the two button detent for the landing gear control but cannot configure the device to use two buttons. Following the procedure in the video, when I press the B1 button to select the two position detent, nothing happens. The B1 LED does not illuminate. It will accept a configuration for the other detents but not the two button detent.

[fallout9]

For 2 detents it's actually the B3 button.

[DeanL]

The official youtube video "VKB NXT line software guide - SEM" clearly states B1 is for two detents. B3 is for the four detent option.

[DeanL]

Update: B3 worked, thank you.

[fallout9]

The official youtube video "VKB NXT line software guide - SEM" clearly states B1 is for two detents. B3 is for the four detent option.

There's a disclaimer about it just under the video, so it would get noticed. Obviously, that doesn't work.