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MrSonei6

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  1. 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?
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