Yes that's weird, I don't know if I can do some reset on my Launchcontrol XL
anyway it's ok for now, I have a visual feedback of the switch position for my show in two days.
I'm gonna keep it like this.
In the mean time I saw this, maybe it would be simple to send a sysex.
"Toggle button states
The state of buttons whose behaviour is set to ‘Toggle’ (rather than ‘Momentary’) can be updated by System Exclusive messages. This is done using the following message:
Hex version F0h 00h 20h 29h 02h 11h 7Bh Template Index Value F7h
Dec version 240 0 32 41 2 17 123 Template Index Value 247
Where Template is 00h-07h (0-7) for the 8 user templates, and 08h-0Fh (8-15) for the 8 factory templates; Index is the index of the button (see below); and Value is either 00h (0) for off or 7Fh (127) for on. Messages for buttons not set to ‘Toggle’ will be ignored.
Multiple buttons can be addressed in a single message by including multiple Index-Value byte pairs.
Indices are as follows:
00-07h (0-7) : Top row of ‘channel’ buttons, left to right 08-0Fh (8-15) : Bottom row of ‘channel’ buttons, left to right 10-13h (16-19) : Buttons Device, Mute, Solo, Record Arm 14-17h (20-23) : Buttons Up, Down, Left, Right"