i lookfor the way of i can install device broadcom in my computer

[fipa]

root@fipa-bukusu:/home/fipa# iw reg get
country 00: DFS-UNSET
 (2402 - 2472 @ 40), (N/A, 20), (N/A)
 (2457 - 2482 @ 40), (N/A, 20), (N/A), NO-IR
 (2474 - 2494 @ 20), (N/A, 20), (N/A), NO-OFDM, NO-IR
 (5170 - 5250 @ 80), (N/A, 20), (N/A), NO-IR
 (5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, NO-IR
 (5490 - 5730 @ 160), (N/A, 20), (0 ms), DFS, NO-IR
 (5735 - 5835 @ 80), (N/A, 20), (N/A), NO-IR
 (57240 - 63720 @ 2160), (N/A, 0), (N/A)
root@fipa-bukusu:/home/fipa# apt-get upgrade firefox
E: Impossible d'obtenir le verrou /var/lib/dpkg/lock - open (11: Ressource temporairement non disponible)
E: Impossible de verrouiller le répertoire d'administration (/var/lib/dpkg/). Il est possible qu'un autre processus l'utilise.
root@fipa-bukusu:/home/fipa# lspci -vvnn | grep -A 9 Network
05:00.0 Network controller [0280]: Broadcom Corporation BCM4311 802.11b/g WLAN [14e4:4311] (rev 01)
 Subsystem: AMBIT Microsystem Corp. BCM4311 802.11b/g WLAN [1468:0422]
 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
 Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
 Latency: 0, Cache Line Size: 64 bytes
 Interrupt: pin A routed to IRQ 19
 Region 0: Memory at d0100000 (32-bit, non-prefetchable) [size=16K]
 Capabilities: [40] Power Management version 2
  Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
  Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=2 PME-
root@fipa-bukusu:/home/fipa# ubuntu-bug bcmwl-kernel-source
/usr/share/apport/apport-gtk:16: PyGIWarning: Wnck was imported without specifying a version first. Use gi.require_version('Wnck', '3.0') before import to ensure that the right version gets loaded.
  from gi.repository import GLib, Wnck, GdkX11, Gdk

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: bcmwl-kernel-source 6.30.223.248+bdcom-0ubuntu8
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
Date: Tue Sep 20 14:21:44 2016
InstallationDate: Installed on 2016-09-18 (2 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
ProcEnviron:
 LANGUAGE=fr_FR
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SourcePackage: bcmwl
UpgradeStatus: No upgrade log present (probably fresh install)