Thanks you all for replying !
Wow, 2 faulty out of 4. And I’ve read a lot of other stuff, problem with the multiplexer. I’m not planning it on repairing it myself. I got this thing brand new, the date code says 1203.
I also asked for support at Behringer. I made a video of the BCR acting funky with their own firmware, the buttons for selecting the preset page are also acting weird. Pushbuttons 5 and 13 work ok this way. I will return the device I think.
Problem is, I think I got the last one in this country. Some clever guy made some good firmware for these things, the’re out of stock everywhere now !