HP StorageWorks XPath OS 7.4.X Administrator Guide (AA-RVHDD-TE, February 2006)

XPath OS 7.4.x administrator guide 39
Downgrading from XPath OS 7.3.0 or later to a previous version
This section describes how to downgrade to an earlier release of XPath OS. If the MP Router is running
XPath OS 7.3.0 or later and you want to downgrade to release 7.2.x or earlier, follow these steps.
Before you begin, make sure that you have the following required items|:
• Access to the platform through its serial port, using a serial cable and a terminal emulator.
• The correct recovery kernel version:
• 1.4.1.3 for XPath OS 7.3.x
• 1.3.0.2 for XPath OS 7.2.x
• 1.3.0.0 for XPath OS 7.1.x.
• An FTP server that the platform can access (for loading the firmware)
• If you are required to replace the recovery kernel, a TFTP server that the platform can access (the TFTP
service can be on the same server as the FTP service)
Downgrading to XPath OS 7.3.0
1. Determine the version of the recovery kernel that is currently installed, log in to the switch and enter the
following command:
2. Downgrade the recovery kernel.
This is required when installing an earlier XPath OS release.
CAUTION: Downgrading the recovery kernel erases all zoning and other fabric-configuration parameters.
To preserve the configuration data, perform a configUpload procedure before upgrading the kernel;
perform a configDownload procedure afterward, to restore the configuration data.
a. Connect to the switch through the serial console.
b. Reboot the switch.
c. Enter the boot loader (PMON) by pressing any key except Enter when prompted during the
countdown sequence.
d. Using a TFTP server only (an FTP server will not work), enter the following commands:
e. Repeat step 2c after the boot and then go to step 2f.
f. Enter the commands shown in the following example. For the set bank0ver command, use the
correct recovery kernel version:
• 1.4.1.3 for XPath OS 7.3.x
• 1.3.0.2 for XPath OS 7.2.x
• 1.3.0.0 for XPath OS 7.1.x.
admin> showrecovery
Multiprotocol Router> set ipaddr ipaddr-of-this-switch
Multiprotocol Router> set netmask netmask-of-this-switch
Multiprotocol Router> set gateway gateway-of-this-switch
Multiprotocol Router> reboot (so that the new IP addresses can take effect)