Step-by-step – Broadcom Wifi Driver Offline Deepin 20 Installation

Installing

3. 3. Downloading broadcom-sta-dkms

   Download broadcom-sta-dkms for Deepin GNU/Linux

   broadcom-sta-dkms Package

   Downloading broadcom-sta-dkms for Deepin

   Provides to Grab both broadcom-sta-dkms and dkms.
   Store them in a Separate Folder.

4. 4. Installing Broadcom-sta-dkms

   Then to Install broadcom-sta-dkms Driver
   First, make a target Directory with:

   mkdir ~/Downloads/broadcom

   Then put the downloaded Packages into this Folder:

   sudo mv ~/Downloads/broadcom-sta-dkms/* ~/Downloads/dkms/* ~/Downloads/broadcom/

   But if you are in Trouble to Find its out on Terminal then See: How to Access Downloads Folder from Browser.
   And then to install its recursively play:

   sudo dpkg -iR ~/Downloads/broadcom

5. 5. Loading broadcom-sta-dkms

   Finally, to Load Broadcom Wifi Driver
   Execute:

   sudo modprobe -r b44 b43 b43legacy ssb brcmsmac bcma

   sudo modprobe wl