Here is the latest new firmware for these models This new firmware is a important update for Fixing Security Vulnerabilities. Please try to update it asap
Anyone else having issues with upgrading a camera IPC-HDBW2431R-ZS/VFS with firmware DH_IPC-HX2X3X-Rhea_MultiLang_PN_Stream2_V2.800.0000015.0.R.200430 or DH_IPC-HX2X3X-Rhea_MultiLang_PN_Stream2_V2.800.0000018.0.R.210707 ? Although they are available on the official Dahua website I can't get them loaded in my camera via NVR. My current firmware version is V2.800.0000013.0.R.191202. My NVR runs DH_NVR4XXX-4KS2_MultiLang_V4.001.0000005.1.R.210713
Thanks @awonson , will try to update directly through the camera GUI instead of the NVR. Previous IPC-update went smoothly throught the NVR so maybe the latest firmware DH_NVR4XXX-4KS2_MultiLang_V4.001.0000005.1.R.210713 is causing this problem.