Wifi support disappead after software update

Just installed Ubuntu 20.04 LTS on Dell XPS 13 this morning
Dell XPS 13 9343 laptop
Installed from USB thumbdrive using ubuntu-20.04.1-desktop-amd64.iso
Installed "minimal" and included "Install 3rd Party for Graphics and Wifi:
Fresh install (erase disk)

Install went smoothly, Wifi worked perfectly

Then:
Software Updater recommended an update. I allowed update, which also went smoothly.
Software Updater recommended reboot. I allowed reboot.

After reboot WiFi support is 100% missing. No wifi or networking related options appear on the upper right menu.

I don't have wired ehternet on that laptop, so I can't run further updates, so I have to report this from a Windows box :(

Software & Updates under Additional Drivers shows Broadcom BCM4532 802.11ac Wireless Network Apapter
* Using Broadcom LINUX STA wireless driver source from bcmwl-kernel-source (proprietary)

Laptop is Dell XPS 13 9343 (came from Dell with an older Ubuntu preinstalled).
I have run Ubuntu 14.04 and 18.04 on it for years, and WiFi has always worked.

Everything else is working fine, but there isn't a whole lot I can do inside "Software and Updates" without working internet.