DS-7608N-E2/8P firmware

Why upgrade it?

If you bought it from HK it will be a chinese version, updating it with an international firmware will most likely brick it. I would not even try it unless you know what you are doing.
 
I took a gamble and upgrade it after reading a few more thread and it works perfect no issue

Firmware Version V3.4.91 build 161220
 
Hi binh25, I'm in the same situation with a DS-7604N-E1/4P. Can you share some details? Which FW did you use, English or Multi Language?
 
I used English one, the upgrade is fairly smooth, didn't encounter any issue, after the upgrade, reboot, done and I did over the Web GUI not at the terminal
 
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Thanks for the tip. Tried the English FW using the browser. No luck, got the upgrade failed message.
 
Yes, that is the same source as the OP.

My NVR was bought via aliexpress a couple of years ago. I was previously able to upgrade the FW to V3.1.0 build 150511 from the Hikvision US site. With that one success, I also tried NVR - DS-76xxNI-E1(E2)P_Firmware_v3.4.3_160822 from the US site also with no luck.