EFI firmware update 1.0 not installing

When I try to install EFI firmware update 1.0 on an Intel Xserve running 10.4.11, the installation proceeds normally and prompts me to reboot upon completion. However, the boot ROM version remains unchanged (XS11.0080.B00) after the machine reboots. Does anyone have any idea why this could be happening? The machine is not booting from a RAID volume, incidentally.

Apparently, it is necessary to manually power up the machine by holding down the power button until the indicator light flashes in order to activate the firmware update; power cycling the machine remotely with ipmitool does not activate the update. This is not mentioned in Apple's online instructions located at http://docs.info.apple.com/article.html?artnum=306590

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    efi-boot-device <array ID="0"><dict ID="1"><key>BLLastBSDName</key><string ID="2">disk0s2</string><key>IOMatch</key><dict ID="3"><key>IOProviderClass</key><string ID="4">IOMedia</string><key>IOPropertyMatch</key><dict ID="5"><key>UUID</key><string ID="6">C68ABA3F-9D52-4699-AA58-69DDF3DCB1FF</string></dict></dict></dict></arra y>%00
    efi-apple-payload0-data %02%01%0c%00%d0A%03%0a%00%00%00%00%01%01%06%00%02%1f%03%12%0a%00%02%00%00%00%00 %00%04%01*%00%01%00%00%00(%00%00%00%00%00%00%00%00@%06%00%00%00%00%00qS%00%00%f2 U%00%00%9eP%00%00%f6U%00%00%02%02%04%04^%00\%00E%00F%00I%00\%00A%00P%00P%00L%00E %00\%00F%00I%00R%00M%00W%00A%00R%00E%00\%00L%00O%00C%00K%00E%00D%00%00M%00B%00P%002%002%00_%000%000%00A%005%00%000%007%00B%00.%00f%00d%00%00%00%7f%ff%04%00
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    enelson76 wrote:
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