Hello!
Did everything as you said.
Launched PuTTY. Put COM1, 115200, connection. When enabled, the DVR I pressed Ctrl+U and run TFTP. But that does not happen.
Tried to upload the firmware via TFTP server.
Connected the power cord to the DVR and the PC. Put the IP 192.0.0128 on your PC. Start the TFTP server. A window opens that says [2016-07-04 23:40:32] TFTP server[192.0.0.128] initialized. Turned on the DVR, nothing in the server window does not...
The serial number is written on the sticker 548806357. The serial number in the window of device information (before update) 0820151023AARR548806357WCVU.
The firmware that was in it v3.3.4, Build 150616. The firmware I tried to install v3.4.62 Build 160503. Method firmware the USB interface.
Now...
Please help!
Decided to upgrade the firmware of DVR DS-7608N-E2/8P (China). After upgrading the DVR firmware is not loaded. On the screen a red square with the inscription HIKVISION.