Frozen Screen - Color Bar Error

I have a big problem, my bmpcc4K has been frozen..
I did setup the "Color Bar" for the "F2" and the LUT On/Off toggle for the 'F1" function buttons.
Then I tried the functions from F3 to F1.

When I pressed the F2 (Color Bar On) I pressed the LUT (Off). The Camera screen has been frozen!!

I don't know what can I do now? The auto focus is working with speedbooster and focus button, that's the only one, what I can hear. The screen is Color Bar only without menu or others. The buttons can not works. No camera screen. Same on the HDMI too. The restart, camera on/off doesn't matter, the start screen is the Color Bar..

I can not refresh the firmware, because my new camera is up to date.

Please help me. How can I "reset" the pocket camera?? Or what can I do now?? Thx!

Do you know how to get the on-screen controls back with a swipe? Tried that?
You can also try and downgrade the firmware, just delete the newer one from your computer and load an older version from their site. If that doesn't help, off it goes to repair.