On the ULTRA cameras (IPC-HFW81230E-Z, IPC-HFW8232E-ZE and so on), I'm running the DH_IPC-HX8XXX-Nova_MultiLang_PN_Stream3_V2.640.0000006.0.R.190627.bin, let me check where is that fw ....
Edit ... take a look here, reset to factory default after the upgrade, and see if things get better