She downloaded the latest firmware (2020.03.22) from HP — but you can’t update firmware over USB if the driver is broken. Classic chicken-and-egg.
Users would send a 20-page report, and the printer would wake up, whir, warm its fuser… then do nothing. The job would vanish from the queue. No error. No paper jam. Just silent defiance. hp laserjet mfp m521dn driver
But that wouldn’t have made a good story. And she’d never admit it. She downloaded the latest firmware (2020
She tried PS. Nothing but a single sheet reading: %%[ Error: undefined; OffendingCommand: showpage ]%% and the printer would wake up