Installing Broadcom Driver on Ubuntu 16.04 without Internet
How to Install Broadcom Wireless Driver for Ubuntu 16.04 Xenial LTS without Internet Access.
First, to Install Broadcom Driver for Ubuntu 16.04 you simply need any Online Computer with a Browser and a USB Stick to Copy the downloaded Packages.
But if you dispose of an Android Mobile Phone with Internet Acces, then an Easier Solution should be of using it! See: Internet Connection USB Tethering Guide.
Especially relevant: the Ubuntu 16.04 bcmwl-kernel-source Driver Supports the following Broadcom Wireless Chipsets:
- BCM4311
- BCM4312
- BCM4313
- BCM4321
- BCM4322
- BCM43142
- BCM43224
- BCM43225
- BCM43227
- BCM43228
- BCM4331
- BCM4352
- BCM4360
Finally, for BCM4306/3 and BCM4318 see instead: firmware-b43-installer; again for BCM4301, BCM4306/2, and BCM4309 the Legacy bundle: firmware-b43legacy-installer.

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1. Launching Shell Emulator
Open a Terminal window
Ctrl+Alt+t on Desktop
(Press “Enter” to Execute Commands) -
2. Checking Wifi Card Model
This is necessary only to Ascertain the Wireless Chipset ID
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