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1. Update to your latest minor release version first before upgrade to recent major release. For example as of A May 2017 , example: a customer would like to was considering an upgrade from 5.4.1 to 5.5.4 (latest release at that time), then the . The correct sequence would be 5have been: 5.4.8 → 1 → 5.4.12 → 5.5.4 instead of  5.4.8 → 1 → 5.5 → 5.5.34.
2. Carefully look for "change" or "changes for ..." sections in the Release notes since that changes is necessary in this specific case when you are updating from 5.4.1 solely.release notes since.
3. Because the upgrade Because upgrading process takes time and is vulnerable to incidents, please minimize the risk by clean cleaning up your system, remove removing unused data, reindex reindexing everything and do doing a full backup first.

Specific points

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