CCTV Camera Pros Viewtron Video Surveillance DVRs - HD-SDI and Standard Definition CCTV Recorders - Manual (Page 44)

44
DVR Tools
Upgrade (Firmware)
In [HOME>Tools>Upgrade] or [Advanced Setup>System>Upgrade], users can upgrade
firmware. Upgrade starts after download from Network or file Copy from USB, and after full
upgrade DVR reboots again.
So restarting twice is required for full upgrade.
USB
Choose USB and upgrade.
Network
Choose Network upgrade and download latest firmware and upgrade.
Please use USB when Network is slow or not reliable.