Alright, I re-installed Ubuntu successfully, and the first thing I did when I got on was try those steps again in terminal. Here is everything that happened in the Terminal:
colbra@colbra-laptop:~$ sudo dpkg -i b43-fwcutter_011-1_amd64.deb
(Reading database ... 94962 files and directories currently installed.)
Preparing to replace b43-fwcutter 1:011-1 (using b43-fwcutter_011-1_amd64.deb) ...
Unpacking replacement b43-fwcutter ...
Setting up b43-fwcutter (1:011-1) ...
colbra@colbra-laptop:~$ sudo b43-fwcutter -w /lib/firmware wl_apsta-188.8.131.52.o
This file is recognised as:
ID : FW10
filename : wl_apsta.o
version : 295.14
MD5 : e08665c5c5b66beb9c3b2dd54aa80cb3
colbra@colbra-laptop:~$ tar xfvj broadcom-wl-184.108.40.206.tar.bz2
tar: broadcom-wl-220.127.116.11.tar.bz2: Cannot open: No such file or directory
tar: Error is not recoverable: exiting now
tar: Child returned status 2
tar: Error exit delayed from previous errors
colbra@colbra-laptop:~$ sudo b43-fwcutter --unsupported -w /lib/firmware broadcom-wl-18.104.22.168/kmod/wl_apsta_mimo.o
Cannot open input file broadcom-wl-22.214.171.124/kmod/wl_apsta_mimo.o
colbra@colbra-laptop:~$ sudo chmod o+rx /lib/firmware/b43 /lib/firmware/b43legacy
chmod: cannot access `/lib/firmware/b43': No such file or directory
colbra@colbra-laptop:~$ sudo ifconfig wlan0 up
SIOCSIFFLAGS: No such file or directory
I then tried to connect to my wireless network, no luck. Restarted my computer, and tried again... no luck. Did I do something wrong? I download all the neccessary files onto a flash drive, and copied them to the Home Directory in Ubuntu. But still nothing seems to work, there's always some kind of error. One thing I noticed though, was that when you said to give this command:
The download link you provided linked to a file in ".tar" format, not ".bz2." Could that be the problem?
tar xfvj broadcom-wl-126.96.36.199.tar.bz2
I found a spare ethernet cable, and wanted to see what would happen if I connected my computer to my modem, and to my surprise, I was connected to the internet!!! I didn't know that was possible! Anyway, I still don't have wireless working, so if there are any better steps to take that require an internet connection, I am now able to follow those steps. I'm even writing this from Ubuntu right now, this is so cool!!!