For best performance, it is recommended to restore factory settings and re-initialize the device after a major update. XVR1B04-I - Zhejiang Dahua Technology Co., Ltd.
The "1B04HI" suffix generally refers to the specific motherboard revision, channel count (often 4 channels), and encoding capabilities (typically H.265/H.264). This device serves as the brain of a security system, managing recording, playback, motion detection, and remote access.