� A critical error may occur if another computer or application communicates with the machine (for example, when printing is performed) while the firmware is being updated. ... � When the machine is connected with a LAN cable, do not perform printing while the firmware is being updated. ... 2 U p d a t i n g / C h e c k i n g
If the printer does not start printing it could be that a canceled or failed print job may exist in the print queue. This article explains how to delete print jobs from the print queue.