Using another machine, I went to:
http://linuxwireless.sipsolutions.net/en/users/Drivers/b43/#Fedora
I downloaded the
b43-fwcutter-019-10.fc27.x86_64.rpm
but it does not contain the firmware.
The broadcom website
https://wireless.wiki.kernel.org/en/users/drivers/brcm80211
claims to support bcm4322X (where X is 4, 5, 7 ....etc).
And from URL
https://kernel.googlesource.com/pub/scm/linux/kernel/git/firmware/linux-f...
I downloaded
brcm/brcmfmac4373-sdio.bin
brcm/brcmfmac4373.bin
so I guess, I have to put those firmware files in /lib/firmware.
But I am just not sure if this will let the OS find my wifi.
If anyone has this legacy broadcom wifi chip (BCM4322) and got it running,
please help.