Hello i Have a dahua Video Dorbell and bought a second VTH Monitor
But the monitor has a newer FW 4.0 with SIP
and my first indor Monitor has a 3.2 Firmware without sip
I get an error if I install the 3.2 FW on the newer Monitor
The new VTH Monitor is vth1550ch-s2 (4.0FW)
The old is vth1510ch (3.2FW)
can someone help me?