need help with choosing the correct firmware

[Coldair]

I keep getting warnings from Avast and Malwarebytes that some of my Dahua cameras need updating because they maybe subject to being easily hacked so here goes the list
System VersionV2.800.15OG004.0.R, Build Date: 2020-10-19
WEB VersionV3.2.1.948164
ONVIF Version19.12(V2.7.0.907196)
S/N
Algorithm Version1.0.2
Security Baseline VersionV2.1

System VersionV2.800.15OG004.0.R, Build Date: 2020-10-19
WEB VersionV3.2.1.948164
ONVIF Version19.12(V2.7.0.907196)
S/N
Algorithm Version1.0.2
Security Baseline VersionV2.1

Device TypeSD49425XB-HNR
System VersionV2.800.1341000.0.R.P9.2522.UN.NR, Build Date: 2020-03-12
WEB VersionV3.2.1.819501
ONVIF Version18.12(V2.4.5.729857)
PTZ VersionV2.401.0000000.64.RHNZ_200219_34642
S/N
Security Baseline VersionV2.0

Device TypeIPC-T3241T-ZAS
System VersionV2.800.15OG001.0.R, Build Date: 2020-11-24
WEB Version3.2.1.984706
ONVIF Version20.06(V2.9.0.979397)
S/N
Algorithm Version1.0.2
Security Baseline VersionV2.1

• Version

System VersionV2.800.0000000.3.R, Build Date: 2019-08-16
WEB VersionV3.2.1.775447
ONVIF Version18.06(V2.4.5.698080)
S/N
Algorithm Version1.0.0

Security Baseline VersionV2.0
Copyright 2019, all rights reserved.

 

[wittaj]

I can tell you for sure if you update the 49425 you will lose autotracking.

Who knows what you may lose or brick updating the others.

And some of those cameras are old enough that updating still could leave a vulnerability.

You really shouldn't even have your cameras on the internet and then this wouldn't be an issue.

 

[bigredfish]

^^^^
This

and remove your S/N s