Making this change isn't complicated. However, you must do it in the correct place. Please follow the steps below:

1. Locate your php.ini file in the /public_html/ folder
2. Edit the php.ini and locate the following value:

   'upload_max_filesize = 2M'

3. Increase this value to what you feel is appropriate, and save it.
4. *Simply, re-upload it back into the /public_html/

* Please note, that if your upload script is located in another folder, you will need to place a copy of the php.ini into the corresponding folder. For example, in WordPress it would be in the /wp-include/ and /wp-admin/ folders.