@guykuo, You're welcome. Hopefully the custom bracket works out for you.
@All, it seems that Dahua has removed the DH_IPC-HX25(8)XX-Molec_MultiLang_PN_V2.800.0000000.15.R.200313.bin file used to upgrade the Amcrest IP5M-T1179EW camera. That is to say, the IPC-HDW2531T-AS-S2 firmware download...