Honor Student
Posts: 4
Member Since: ‎07-17-2012
Message 1 of 2 (1,307 Views)

HP Laserjet M4555mfp Printer



I am upgrading the firmware 2302243_421964 version But Display error massage  99.07.20 upgrade error for m4555mfp printer, Please help me anybody.

Associate Professor
Posts: 1,486
Member Since: ‎07-08-2011
Message 2 of 2 (1,285 Views)

Re: HP Laserjet M4555mfp Printer

That specific error message is not posted in the Service Manual, however there are a few others that may be helpful.


99.00.07 Upgrade not performed error reading upgrade


A remote firmware upgrade (RFU) was not performed.

Unexpected read error when reading rest of header.

Recommended action

1. Download the RFU file and attempt the upgrade again.

2. If the error persists, replace the hard disk.




Firmware installation error

Recommended action

Reload the firmware.



Basically you should try to reflash the firmware.  If that doesnt work then you may have bricked your printer and shoudl consider warranty support or replacement.  Good luck!


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