Just to let know I updated my NVR4204-P-4KS2 with the new firmware NVR4XXX-4KS2_MultiLang_V4.001.0000003.1.R.200813 over the top of latest firmware v3 of 2019. So far, so good. Only minor bug in Playback-screen, e.g. wrong Dutch translations when pushing view-buttons (notifications bottom left)...