The ultimate setup for an HP4024:
Hold the reset button (inside the AV port) while booting to choose the boot device. skyworth hp4024
If your ISP was lenient and ADB is enabled, unlocking the device is trivial. The ultimate setup for an HP4024:
This is where the device shines. The HP4024 supports Widevine L1 DRM by default. This is crucial. It means Netflix, Amazon Prime, and Disney+ stream in Full HD (1080p) and 4K resolution. Unlike generic Android boxes that are limited to 480p, the HP4024 is fully certified. Hold the reset button (inside the AV port)
The Amlogic S905X2 chipset is the star here. It includes a dedicated hardware decoder for VP9 Profile 2 (YouTube 4K) and H.265/HEVC. It also supports USB 3.0 via the internal board (though many operator boxes disabled the external port, limiting you to USB 2.0 speeds on the outside).