Here is the latest new firmware for these models This new firmware is a important update, Please try to update asap. Models support. IPC-HDW5231R-Z/ZE IPC-HFW5231E-Z/Z5/Z12/ZE/Z5E/Z12E IPC-HDBW5231R-Z/ZE IPC-HDBW5231E-Z/ZE IPC-HDW4231EM-AS/ASE, IPC-HDBW4231F-AS, IPC-HDBW4231E-AS/ASE ...
Here is the latest new firmware for these models This new firmware is a important update, Please try to update asap. Models support. IPC-HDW5231R-Z/ZE IPC-HFW5231E-Z/Z5/Z12/ZE/Z5E/Z12E IPC-HDBW5231R-Z/ZE IPC-HDBW5231E-Z/ZE IPC-HDW4231EM-AS/ASE, IPC-HDBW4231F-AS, IPC-HDBW4231E-AS/ASE ...
further down that page it says there is another firmware for the IPC-HFW5231E-Z12E that is is different from the others on that page I think it is post 5
IPC-HFW5241E-Z12E is using different FW, just watch on the list that i posted.
Also the following?------YES, suits for these 2.
IPC-HDW5431R-ZE
IPC-HDBW4231FP-AS "