B54IR-Z4E-S3
IPC-T54IR-AS-S3
IPC-T54IR-ZE-S3
NVR8CH-8P-2AI
The main upgrade in newer firmwares of WizMind-S (5xxx-S3) cameras is AcuPick.. Which works only with a new 5xxx-EI NVR (You have this model).
If You interested in this function (You can find many videos about AcuPick on Youtube) then You should upgrade firmware. If not, there is no need.