Firmware for DS-8664NI-I8

Hi there,

I've just purchased an 64 channel DS-8664NI-I8 for my company and set it up.

I've searched the official hikvision sites (eu, tr and us) for any firmware but it's not listed on their site.

My current firmware version is v4.1.54 build 180621.

After a while found this ftp;

ftp://ftp.hikvisioneurope.com/Technical%20Materials/02%20%20NVR/00%20%20Product%20Firmware/04%20I-series/

Are these firmwares compatible with my product? Any info on that.

thanks