hikvision 2de4220

Good Day, I recently purchased a hikvision DS-2DE4A225IW that is at firmware version V5.6.14 build 200622 and I would like to update it to V5.7.3_220315, which is apparently the most recent version. Based on everything I could locate, the firmware download labeled DS-2DE4A225IW-DES6 on the...

I'm looking at YouTube sources primarily but, the sources I have watched are confusing as much as anything. How do the different Dark Fighter releases compare to each other? How does ColorVU fit into the nighttime use role? How do the price points change when going from ColorVU to the Dark...