A firmware update was recently released for the NVR6XX-4KS2 series devices.
Information, instructions, and download links can be found Here
From Dahua Wiki
OTC802.jpg (370 × 370 pixels, file size: 8 KB, MIME type: image/jpeg)
Click on a date/time to view the file as it appeared at that time.
|current||02:17, 23 December 2015||370 × 370 (8 KB)||Qi Chen|
- You cannot overwrite this file.