File/Direcory File Size Date
.. - 2021-11-12
I series NVR firmware to support DS-1901 and local dual-SMTP function - 2020-04-22
I series NVR firmware with two way audio failed issue on Hik-Connect for Acusense camera - 2020-10-15
I series NVR which supports three 2MP email images - 2020-09-27
V4.1.64 build190119 - 2019-01-25
V4.22.005 build191208 - 2020-03-27
V4.40.015 build200616 - 2020-06-29
V4.40.016 build200803 - 2020-08-31
V4.40.017 build201124 - 2021-01-08
V4.50.000 build210125 - 2021-03-05
V4.50.010 build210322 - 2021-06-29
V4.51.005 build210628 - 2021-09-07
V4.51.006 build210708 - 2021-09-07
V4.51.007 build210818 - 2021-09-03
V4.51.025 build210927 - 2021-10-17