Can a CUM PTF update the microcode on the service processor?

Attention, hardware gurus.

I am at a clients and they can not IPL their box.  I loaded the latest
CUM, HIPER, Database and HTTP PTFs last week.  The load went fine on the
production box (an 820) and a test box (a 170).  Everything went find on
the 170 and the 820 ran fine until an IPL over the weekend.  Now the box
does not want to IPL.  We have tried to IPL on the A side, the B side
and an Alt IPL (D) using both the last savsys and the PID CDs for 5.1.
In every case, the box gets and SRC code of either B427 40A0 or B1xx
4609.  One message points to the LIC the other to the Service Processor.
The hardware guy is here and had removed all the cards, except the MFIOP
and we have popped out all the DASD and we still can not get the thing
to IPL, not even to DST.

At first I figured that the PTF load had something to do with it, but
all logic tells me that this is a hardware issue, with the DASD not
installed, the box should know nothing about the PTFs I loaded.  Is it
possible that the PTFs updated the microcode of one of the cards in the
box (ie the service processor - 244A)?  Any insight to this would be
very helpful.

Thanks and regards,
cjg

Carl J. Galgano
EDI Consulting Services, Inc.
550 Kennesaw Avenue, Suite 800
Marietta, GA  30060
(770) 422-2995 - voice
(419) 730-8212 - fax
mailto:cgalgano@ediconsulting.com
http://www.ediconsulting.com
AS400 EDI, Networking, E-Commerce and Communications Consulting and
Implementation
http://www.icecreamovernight.com
Premium Ice Cream Brands shipped Overnight

"You ain't gonna learn what you don't want to know" - rw