Ran across your posting and don't know if you found a fix yet for your
problem of needing to re-flash the microcode.
I had the same problem and here is what I did on my Mod 7043 - 140 when
it told me I had a corrupt microcode (code FEB on my machine). I did
this through a serial console but I think you can also do it through a
1)- Download the latest version of the code for your machine from
http://www.rs6000.ibm.com/support/micro . I downloaded to a
2)- Copy the image file *.img to a floppy disk and name it as
3)- Put the disk in your computer and turn on the machine.
4)- After a few minutes my machine did not go to SMS but displayed
Failed to boot
At the above prompt I typed in
setenv load-base 600000
boot floppy:1,\precover.img (yes that is a backslash)
5)- After another delay the machine booted to a display that allowed me
to press 1 and enter the SMS display. From that point I was able to
navigate to the Utilities and Update the system firmware. The screen
displayed plenty of messages letting me know that the firmware update
was in progress and it took about 5 minutes. Make sure you DO NOT
TURN OFF THE POWER DURING THIS PROCESS.
6)- After the firmware update I was prompted to remove the disk and
press Enter to reboot. I then went back into SMS to make sure my
configuration and boot sequence where correct.
Hope this helps.
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