problem with sts switches on pax2 pro

[brunovaltho]

hi,
I would like to know if somebody have the same problem than me :sometime, the switches under the screen don't work. If I want to change a sound and call a new STS
I have to move the screen (not manually) and it works again. Then may be ten minutes later or an hour, it's the same !
the only answer I had from Korg is to update the machine but I'm sure that it will help
can somebody help me, thanks in advance
Bruno