This article explains the reason of minimum FW version 6.52.0003 for AUTODOME 7000 HD, MIC 7000i and MIC 9000i and what to do i f the unit has been upgraded to a higher version.
See what you can do when MIC 7000i with FW 7.72 shows blurred images.
After restart, the quality of the image is good for a short time, but the issue reappear.