The printer control panel must be unlocked before performing the firmware update. If the printer is locked through Web Jetadmin, unlock the control panel before following the update steps below.
An .RFU update can be sent to a printer as long as the printer is in "ready" state; the printer will wait for all input/output (I/O) channels to become idle before performing the update.
The firmware update involves a change in the format of nonvolatile random-access memory (NVRAM). Any menu settings changed from the default settings will return to default settings, and must be changed again if the user wants settings different from the defaults. Examples of settings affected in this way are tray types, default symbol sets, and Web access alerts.
The elapsed time for an update depends on the I/O transfer time, as well as the time that it takes for the printer to reinitialize. The I/O transfer time depends on a number of things, including the speed of the host computer sending the update, the I/O method (Fast InfraRed Connect [FIR], parallel, or network). The re-initialization time will depend on the specific hardware configuration of the printer, such as the number of EIO devices installed, the presence of external paper-handling devices, and the amount of memory installed.
If the remote firmware update process is interrupted before the firmware is downloaded (while RECEIVING UPGRADE appears on the control-panel display), the firmware file must be resent. If power is lost during the flash DIMM update (while UPGRADING PRINTER appears on the control-panel display), the update is interrupted and the message RESEND UPGRADE appears (in English only) on the control-panel display. The update must now be sent only by a computer attached to the parallel port of the printer.
REFRAIN FROM SENDING PRINT JOBS TO THE PRINTER WHILE THE PRINTER IS UNDERGOING THE FIRMWARE UPDATE.
Finally, any print jobs ahead of the .RFU job in the queue will be printed before the update is processed.
The printer automatically power cycles after processing the update.
Use one of the following methods to update the printer.