I am always pushing the necessity of keeping up with patches and updates – they are everyone’s essential step for good cyber security.
However here is the warning tale for when things go wrong at the vendor end:
HP rushes to fix bricked printers after faulty firmware update (bleepingcomputer.com)
When patches and updates go wrong
This is where your business continuity plan comes into play.
You did plan for a printer outage? If you didn’t then the printer could not have been an important part of your operation – so not a problem.
You do not have a plan, not an incident response or a business continuity plan?
Clive Catton MSc (Cyber Security) – by-line and other articles