I have a IPC-HDW3849H-AS-PV
I tried to update the firmware to DH_IPC-HX3XXX-256-Taurus_MultiLang_PN_Stream3_V3.140.0000000.32.R.250115 through web inrterface. I extracted the zip file
DH_IPC-HX3XXX-256-Taurus_MultiLang_PN_Stream3_V3.140.0000000.32.R.250115.bin
firmware-x.squashfs.bin...