This patch address an issue where the upgrade would occasionally hang if upgrading from version 8.1.3, 8.2.1, 8.2.2 or 8.2.3.
To download the patch, you will need your 16-digit license key that will function as both the username and the password. Download the nsr823-upgrade-update.zip file and copy it to the /home directory on the appliance.
https://license.soleranetworks.com/upgrades/nsrs/nsr823-upgrade-update.zip
As root, run the following commands:
Perform the upgrade to 8.2.5 as normal.