How to quickly increase the All-in-One WP Migration plugin upload limit

For the instructions outlined in this tutorial to work, you must use version 6.77 or earlier of the All-in-one WP Migration Plugin.

You can download version 6.77 here, all-in-one-wp-migration.6.77

In the constants file…

/wp-content/plugins/all-in-one-wp-migration/constants.php Find this…

// =================

// = Max File Size =

// =================

define( ‘AI1WM_MAX_FILE_SIZE’, 2 << 28 );

 

and replace with this…

// =================

// = Max File Size =

// =================

define( 'AI1WM_MAX_FILE_SIZE', 2 << 28 *1.2);

 

And you will have 16GB upload limit.

Increasing the 512MB size limit on All-in-One WP Migration Plugin

If the size of your .wpress file exceeds 512MB, you will be invited to buy the Unlimited Extension of All-in-One WP Migration.

Go ahead and open up /wp-content/plugins/all-in-one-wp-migration/constants.php

Find constants.php on following path

Lines 246:249 define the file upload size limit, there’s a nice comment there indicating such. If you’d like to control+f “size”, it should take you right to it.

// =================

// = Max File Size =

// =================

define( 'AI1WM_MAX_FILE_SIZE', 536870912 );

 

You’ll see the max size is defined in Bytes. In order to increase the upload size limit to 4GB, simply multiply the number seen here by 8.

 

// =================

// = Max File Size =

// =================

define( 'AI1WM_MAX_FILE_SIZE', 4294967296 );

 

Alternative Method

// =================

// = Max File Size =

// =================

define( 'AI1WM_MAX_FILE_SIZE', 536870912 * 8 );

 

Once you complete save the file and navigate back to the “import” function for the All-In-One Migration Plugin. The file upload limit now reads 4GB.

Now you can upload your file