XDJ R1 Display problem after firmware update 1.12

Hi,
after the Firmware update from 1.11 to 1.12, the start display doesn't work. When i put out the cabel and wait a while, then the rx1 start normal but when i turn it off and than on, the start up display doesn't work. All the other function's and lights are ok.
When i put a is usb stick in, i can browse in the folder, but i can't see anything on the display.
any help, please?