A firmware update was recently released for the NVR6XX-4KS2 series devices.
Information, instructions, and download links can be found Here
From Dahua Wiki
PFA151.jpg (370 × 370 pixels, file size: 6 KB, MIME type: image/jpeg)
Click on a date/time to view the file as it appeared at that time.
|current||01:17, 12 January 2016||370 × 370 (6 KB)||Qi Chen|
- You cannot overwrite this file.