Your ListManager license controls what version you may run or the date up to which you may upgrade your ListManager version. To determine if you are allowed to upgrade to the current version of ListManager, check Max Version and Last Day to Upgrade in Utilities: Administration: Server: Operational Statistics: License Capabilities.
Back up your database and test before upgrading. If you encounter a problem while doing the actual upgrade, you may not be able to recover your data without a backup.
Choosing the Correct Upgrade Process for Your Version
The upgrade process to ListManager
9.0 8.0 7.0 6.0 5.0 9.1 8.1 7.5 6.1 3.0 to 4.2.1 9.2 8.5 7.6 1.0 to 1.2 9.3 8.8 7.8 10.x 8.9 8.95
Lyris, Inc. Self-Serve Portal:
6401 Hollis Street., # 125
Emeryville, CA 94608
Customer Support:
1-888-LYRIS-CS (1-888-597-4727)
or
1-571-730-5259
Hours:
Monday through Friday
6:00 a.m.--6:00 p.m. PST
http://www.lyris.com/customer-service/contact-support/