Installation and Upgrade Guide

G06.24 Software Installation and Upgrade Guide—528593-005

15-1

Returning Firmware to Previous

Versions

This section describes how to return processor boot code, SP firmware, and SCSI boot

code back to the earlier product versions before loading the previous operating system

image.

Alerts

Processor Boot Code

If you are returning to an RVU prior to the G06.16 RVU, you must return processor

boot code back to the earlier PVU before performing a system load of your previous

RVU. If you are returning to a G06.16 or later RVU, it is not necessary to return

processor boot code back to the previous version.

SP Firmware and SCSI Boot Code

It is not necessary to return SP firmware or SCSI boot code back to the earlier product

update versions when falling back to your previous RVU. (See the T1089 softdoc for

compatible RVUs.) However, if you want to, HP recommends that you update the

firmware before performing a system load of the previous RVU. OSM requires

T1089ABK or later.

Returning Processor Boot Code to the

Previous Version (Using TSM)

To install the previous version of the processor boot code:

1. Determine the Correct Version of the Previous Processor Boot Code

2. Return the Processor Boot Code to the Previous Version on page 15-2.

Determine the Correct Version of the Previous Processor Boot

Code

To determine the previous processor boot code version with the VPROC command,

see Verify Location and Version of Processor Boot Code on page 8-3.