: In version 6.77, users can manually increase the maximum upload limit by editing the constants.php file. By changing the AI1WM_MAX_FILE_SIZE value, the limit can be extended to 10GB or more without additional software.
Instead of purchasing the ServMask Unlimited Extension, which can be costly, users can utilize the 6.7 version to migrate large sites for free. 3. Reliable Legacy Support
Once you have downloaded the .zip file for All-in-One WP Migration 6.7, follow these steps to install it on your WordPress site: Step 1: Remove the Current Version
I can provide specific, step-by-step instructions tailored to your environment. Share public link
He bypassed the official repositories, which only offered the shiny, restrictive new versions, and dove into the "Wayback Machine" of dev forums. He navigated through dead links and 404 errors until he found a thread from 2018.
If you need to re-upload it as a for offline/manual install:
Visit the All-in-One WP Migration Advanced page on WordPress.org.
Whether you choose the original version 6.77 or one of its modified variants, the installation and usage process remains the same. Here's a step-by-step guide:
The official plugin author explicitly warns that outdated versions have known security issues that "will open your website to bad actors." You should use the latest version of any plugin, especially on live sites. Version 6.77 was last updated years ago, and no security patches have been applied since.
Disclaimer: This guide is for informational purposes. Always ensure you have a verified backup strategy in place before performing database operations.
However, as the plugin has evolved, newer versions have introduced tighter restrictions on import sizes, often limiting the free version to 512MB or less. This has led many seasoned developers and site owners to search for older, more permissive versions—specifically (sometimes referred to as 6.67 or 6.77)—which was known for its "portable" nature, allowing for larger file imports without requiring paid extensions.
: Older backups made with version 6.7x are often more compatible with this specific version than with the newest iterations. Installation Steps file from a trusted third-party source like to your WordPress admin panel. Navigate to Plugins > Add New > Upload Plugin the file (e.g., all-in-one-wp-migration.6.77.zip ) and click Disable Auto-Updates
Version 6.67 of the All-in-One WP Migration plugin is widely considered a "golden version" within the WordPress community. Released prior to the enforcement of stricter upload limits and significant interface changes in later versions, 6.67 is frequently sought after for its stability and unrestricted import capabilities.
Historically, version 6.7 was renowned for not having the strict 512MB import limit found in newer, free versions of the plugin.
In 2026, the latest version of the plugin is robust but strictly enforces the import limit of the free version. Here is why users choose to download the older 6.7.x version: 1. Unlimited File Size (Import/Export) The main reason is bypassing the
