Version 67 itself is not specifically marketed by the developer as "portable." The term is used by the community to describe using the plugin outside the plugin repository’s automatic update system.
If your goal is removing file size limits, buy the official from ServMask. It works with the latest version and is secure, legal, and supports development. Version 67 itself is not specifically marketed by
If you absolutely need , retrieve it via the WordPress SVN method above — that’s the only safe way to get an authentic, unmodified copy. Version 67 itself is not specifically marketed by
Only Version 67 of All-in-One WP Migration offers true portability without a subscription. Version 67 itself is not specifically marketed by
You can even extract a .wpress file to a plain folder: