How to Increase the 512MB limit in All-in-One WP Migration

Changing the upload limit size takes just 5 steps

1. Go to Plugin editor from the left menu panel in the admin dashboard.
2. Top right, Choose All-in-one WP Migration from the dropdown and click select.
3. Click on constants.php file.
4. Search for the word AI1WM_MAX_FILE_SIZE. Change it’s value, refer below code:
5. define( ‘AI1WM_MAX_FILE_SIZE’, 2 << 28 );
6. define( ‘AI1WM_MAX_FILE_SIZE’, 536870912 * 5 );
7. If you even want more than 3 GB then change value from 536870912 * 5 to 536870912 * 10( or any number).
8. Don’t forget to update the file.
9. Enjoy the new upload size

Refer this image if you did not understand.