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Maintenance Operations
Reverting to Previously Installed Software Version
This procedure allows you to undo a software upgrade.
The appliance has two working partitions. One is designated as active
and the other as inactive. The inactive partition is used for upgrades and
the status is switched between the partitions when the upgrade is ready
to be activated. If the appliance does not start up with the new version,
it automatically switches to the previous configuration at the next
reboot. You can also switch back to the previously installed software
version manually as instructed here whenever necessary.
T
To switch back to the previously active version
1.
Connect the serial cable supplied with the appliance to the serial
port on the appliance and to a computer.
2.
On the computer, open a terminal with settings 9600bps, 8
databits, 1 stopbit, no parity.
3.
(Re)start the appliance:
•
If the appliance is powered on, press
Enter
, log in as the user
root
with the password you have set for the appliance, and
issue the command
reboot
.
4.
Wait until a boot menu is shown.
5.
Select
Switch to previously installed software version
. Note the
indicated partition (A or B). The appliance switches partitions and
boots up.
6.
Refresh the policy on the engine to synchronize the policy and
other configuration data between components.
If you want to undo this operation, repeat the steps exactly as above.
Note –
When the appliance is powered and you need to unplug it,
always wait at least five (5) seconds before plugging in the appliance
again. Otherwise, the appliance may not have time to clear properly
and fails to start.
Note –
If the certificate for system communications on the previously
used partition is not valid anymore, see the
Troubleshooting
section in
the Management Client’s
Online Help
for renewal instructions.
