HI there ..
If you have a question like this : Where is /opt/SecureSpan/Gateway/config/etc/sql/upgrade_8.2.00-8.3.00.sql for the 8.2-8.3 upgrade?
than here is some info for you
In 8.2 and lower, there was a base ssg.sql file located here (along with some upgrade sql files &etc):
In 8.3 and higher, that file has basically been replaced with xml files located here:
btw .. you should not be doing upgrade like this anyway. follow the upgrade process via ssgconfig menu, it is the only supported way