A firmware update was recently released for the NVR6XX-4KS2 series devices.
Information, instructions, and download links can be found Here
From Dahua Wiki
NVR7A24DR.jpg (370 × 370 pixels, file size: 11 KB, MIME type: image/jpeg)
Click on a date/time to view the file as it appeared at that time.
|current||23:01, 8 March 2016||370 × 370 (11 KB)||Mark Navarro|
- You cannot overwrite this file.