Awesome! I was getting Firmware Error 900.57 on my Dell 2360dn at work. The printer recommends restarting, I powered down Twice and waited more than 10 seconds but Error remained. I checked the queue and sure enough, there was a job sent from the browser(IE11). I Deleted the pending jobs and restarted the Print spooler service. Powered down the printer and back up again and all is well.