Hello Thanks for this forum,I used the wrong version meant for 76808NI-E8/P,and bricked my NVR model 7604n-e/4p,I was searching through the google and landed on this wonderful site and found my tftp tool and firmware for 7608n-e8,I was almost certain this is correct ,and I reflashed it via TFTP ,it was a gamble ,I made it to work and working okay but only DHCP would not work so I need to manually add the ip address for the router,plug and play camera works okay ,but you need to use the same password as nvr,and email does not work as before ,this software does not include tlsor ssl connection ,so no problem.I am happy,I reflashed via usb stick with same software still only the DHCP would not work all other are fine including the internal NIC dhcp woks.
so I need to say a big thank you. This is my first post so if any mistakes please excuse me.