Under the hood, it runs a reference design by a company called Hisilicon (specifically the chipset). The firmware isn't magic; it’s a squashfs image packed with a boring, but functional, web server.
Your ancient, forgotten DVR boots up. The grainy security feed of the parking lot appears. It’s 4:3 aspect ratio. It’s blocky. It’s perfect. Dvr-104g-f1 Firmware Download
You open your browser. You type: "DVR-104G-F1 Firmware Download." Under the hood, it runs a reference design