broadcom-bt-firmware provides the firmware blobs needed by Linux to initialize Broadcom Bluetooth adapters found in many laptops and mini-PCIe/M.2 modules. On these devices, the kernel driver expects a small firmware image to be loaded at runtime before the controller becomes fully functional. The project aggregates known-working .hcd files, often extracted from vendor Windows drivers, and organizes them by chipset and device ID so users can match hardware quickly.