A firmware update was recently released for the NVR6XX-4KS2 series devices.
Information, instructions, and download links can be found Here
From Dahua Wiki
firstname.lastname@example.org (196 × 176 pixels, file size: 2 KB, MIME type: image/png)
Click on a date/time to view the file as it appeared at that time.
|current||19:23, 19 April 2017||196 × 176 (2 KB)||JP Wenger|
- You cannot overwrite this file.