I have the same problems with my Ursa Mini Pro, my screen randomly has green lines and freezes the image and the touch response.
While this happens many times the video files are cut and when trying to format the memory there are times when I mark errors and simply do not format it, or at other times if format the memory.
It also occurred to me that it takes a while to start even if it is connected to a battery or is connected directly to the power eliminator.
Both in the PRO RES format and in DNG I get these errors.
The memory I am using is approved by Blackmagic Design.
The firmware is version 4.3.3
I have only two weeks with the camera and I really get angry that I have these kind of failures, I sold my URSA MINI 4.6k which worked perfect and having these types of malfunctions makes me feel a little disappointed.
I leave you this video when my Ursa Mini Pro Freeze error occur
https://1drv.ms/v/s!ApP7L5u-wXyGmQC9Abi6FFg_iM24I hope i can get support of Blackmagic Design to replace my UMP, i really love this camera and i cant wait to use it without errors.