The elapsed time for an update depends on the I/O transfer time, as well as the time that it takes for the device to reinitialize. The I/O transfer time depends on a number of things, including the speed of the host computer that is sending the update and the I/O method (parallel or network). The reinitialization time depends on the specific hardware configuration of the device, such as the number of EIO devices installed, the presence of external paper-handling devices, and the amount of memory that is installed.

Finally, any print jobs that are ahead of the RFU job in the queue are printed before the update is processed.

Use one of the methods described in this manual to update the device firmware.

Device messages during the firmware update

The following table lists the causes and results of possible interruptions to the firmware update.

Table 6-5Troubleshooting a firmware update

Cause

Result

 

 

The job was cancelled from the control panel.

No update has occurred.

 

 

A break in the I/O stream occurred during send (for example,

No update has occurred.

the parallel cable was removed).

 

 

 

A power cycle occurred during the RECEIVING UPGRADE

No update has occurred.

process.

 

 

 

A power cycle occurred during the PERFORMING

No update has occurred. Resend the update through a parallel

UPGRADE process.

port.

 

 

A power cycle occurred during the INITIALIZING process.

The update has been completed.

 

 

Print jobs that are sent to the device while an update is in process do not interrupt the update.

All HP LaserJet devices leave the factory with the most recent firmware version installed. If a remote firmware update fails in an MS Windows operating system, the .RFU file must be resent.

If a remote firmware update fails in a Macintosh operating system, contact support from an HP Customer Care Center.

The following table lists possible reasons for the failure of a remote firmware update and the corrective action required for each situation.

Table 6-6Troubleshooting a firmware update failure

Reason for firmware update failure

Corrective action

 

 

The .RFU file is corrupted.

The device recognizes that the file is corrupted and rejects the update. Download

 

the file again and send the new file to the device. Download the file from

 

www.hp.com/go/ljm1120_firmware.

 

 

The wrong device is contained in

The device recognizes the device mismatch and rejects the update. Download the

the .RFU file.

correct file and send it to the devicet. Download the file from www.hp.com/go/

 

ljm1120_firmware.

 

 

The upgrade was interrupted.

See Table 6-7 Update messages on page 134.

 

 

A flash hardware failure occurred.

Although it is extremely unlikely, the devicet might have a hardware failure. Call

 

technical support to address the problem (see the flyer that came with the device

 

for a local telephone support list).

 

 

Engineering Details

ENWW

Remote firmware updates 133

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HP M1120n manual Device messages during the firmware update, 5Troubleshooting a firmware update

M1120n, M1120 specifications

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