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I have restarted the device and the door phone several times. :nervous:

Hello, Yesterday i flashed the firmware "General_Overseas_VTH1510_Eng_P_SIP_V1.000.00.0.R.20170425.bin" on my "DH-VTH1550CH". After the successful update process, the VTH is booting to the "Welcome-Message" and than is coming a black screen. But a ping to the old IP address works fine. What...