GNU/Linux Ubuntu 21.10 Installing Broadcom BCM43142 Driver Guide
Hi! The linked Tutorial shows you Step-by-Step How to Install Broadcom BCM43142 Wi-fi/Bluetooth Driver for Ubuntu 21.10 Impish GNU/Linux.
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 Ubuntu 21.10 Broadcom BCM43142 Driver Installation Guide