xw4600 CPU upgrade to Xeon X3363 - getting microcode update error on POST

[UncleDano]

Up graded the Core 2 Duo 8400 3.0Mhz CPU to a Xeon X3363 2.83Mhz CPU by using "Mod Sticker" on the X3363.

Works okay but with one error on startup.

Getting this error on POST:

"1801 - Microcode Update Error
Missing or Invalid Processor Update. Please
contact Hewlett-Packard Company for a new microcode
Update to Support the new Processor Stepping."

The current BIOS version is 1.34 which I think is the latest.  How do I update the BIOS for this Processor Stepping?

Use a xw6600 or a z400 BIOS update?

[erico]

From everything I have read I have not seen anywhere that a Xenon CPU is cpompatible with the motherboard.

You may have just reached an unsurmountable roadblock.

A Core 2 Extreme Quad Core QX9650 3.0GHz is compatible with the workstation's motherboard. It is also a beastie CPU. 

The subject was discussed in the past at the following thread

http://h30434.www3.hp.com/t5/Desktop-Hardware-and-Upgrade-Questions/How-much-can-I-upgrade-this-xw46...

The specs for the workstation, along with the complete compatible CPU list is at the following URL.

http://h20564.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c01184908

[UncleDano]

I am sure I will have to find someone who can modify the bios microcode for the Xeon X3363 CPU stepping.

I chose the X3363 over the XQ6850 becaue it's only 25% of the  cost, had 50% more Cache, uses less power, runs cooler.

And is easy to modify for the LGA775 socket and install.

[UncleDano · Accepted solution]

I was able to get some help on modifying the Bios microcode for the Xeon x3363 processor.

Fans run at normal speed now and startup error "1801" is gone.  Machine runs great!

[ncdave4life]

So, don't keep us in suspense, Uncle Dano!  What help did you get? How did you make the error message go away?