I am trying to install Devuan Excalibur from the live CD, but even the live CD is unable to connect to the internet.

Running lspci shows that my wifi card is a Broadcom BCM 4360 and that the kernel is trying to use the bcma driver with it. This is clearly incorrect, so I tried to figure out how to load the correct driver, to no avail (it is seemingly not included with the nonfree firmware loaded by default). Apparently, it is located in the broadcom-sta-dkms package, but my lack of internet access means that I cannot simply download it from the live CD.  Any ideas on how I should proceed to get the wifi card to work?

EDIT: I am currently running a Windows install that has the functioning driver, so if there is any way to get the live CD to make a wrapper around the Windows driver, I would be willing to try that as well. I also have fast boot disabled, so fast boot is not the problem.