I would like to upgrade my IPC-HDBW4300R-Z camera. It's an Ali Express version.
I tried this file:
ftp://ftp.asm.cz/Dahua/kamerove_systemy/_Firmware/04IPC/03-Eco-savvy/DH/DH_IPC-HX5(4)XXX-Adreia_Eng_P_Stream3_V2.420.0009.0.R.20151106/
and this one...