When a 99.09.67 error is displayed on the control panel of a printer, two things come to mind. Did I print or scan anything sensitive on the unit and I’m about to lose an hour searching for and downloading the correct firmware, finding a USB 2.0 Flash Drive for the upload, and a replacement 2.5″ SATA drive.
00:00 – SanDisk SSD for printer storage.
00:25 – HP LaserJet 600 M601
00:30 – 10-minute testing and calibration.
02:50 – Confirm the client’s printer is good with the HDD.
Fixing The Issue
The first that you need to do is to get your hands on a USB 2.0 Flash Drive. Back up any data that is on it and then format the drive. When that is done, go to HP.com and search for the firmware, or for a faster search, do your query from the search engines so that it takes you to the download page. Read the instructions and save the firmware to the USB 2.0 Flash Drive in the format requested. Now that it is prepared, be sure that the printer is powered off and place the USB 2.0 Flash Drive in the USB slot on the front and install the firmware.