GNU/Linux Debian Trixie Installing Broadcom BCM4311 Driver Guide
How to Install Broadcom BCM4311 Wi-fi/Bluetooth Driver on Debian Trixie 13 GNU/Linux – Step by step Tutorial.
The Package Provides the Source Code for the wl Kernel Modules and makes use of the DKMS Build Utility to Install them for the Running Kernel.

GNU/Linux Debian 13 Broadcom BCM4311 Driver Installation Guide