After software update, no WiFi or WWAN adapter found

Reported by someone on the forum and confirmed by me:

I just updated my Librem 5’s PureOS Byzantium using the PureOS Store. Upon rebooting after the update, there is no WiFi or mobile/cellular/WWAN network connectivity. The icons don’t show in the top corner of the screen and the settings for WiFi/Mobile show “No (WiFi|WWAN) Adapter Found”.

lsusb shows a device 2020:2060 Qualcomm, Incorporated Qualcomm CDMA Technologies MSM, which I presume is the modem.

Have tried toggling kill switches on and off and rebooting.

Phone is behaving almost as if in lockdown mode, as the rotation sensor is not active. No icons for camera or microphone either, though, so not quite the same mode.