SCN450 Freezes after maj 1.1.2

Good morning,

Since I updated the firmware to version 1.1.2 I have had image freezes when I use the HDMI output.
The problem is not present when I am on the video projector interface.
I tested with several HDMI cables and several devices but the problem persists… Can you provide me with the stock version of the firmware as I am not using the projector interface?
Or if you can solve the problem, I would be delighted.

Thanks in advance