[Q] strange issue - missing camera in STOCK 5.0.2

Hello,
have a strange problem with camera.
I flash in recovery to my D405N stock FlashableSTOCK_D405N-20A.zip.

Immediately after installation(few hours) camera working as is expected - can take a picture.
But In the morning I got error "cannot connect to camera", without any reason - no change same config as before.


If I flash another version - KK 10D, everything is working fine. Then no problem in HW.

I double check the content of files for flashing and content is same(MD5) for FlashableSTOCK_D405N-20A.zip and D405n20a_00.kdz.
So I don't expect any problem in file structure.


Any idea where is a problem?