Please intsall MaxiLinkII in your PC first: http://www.auteltech.com/autelcms/u/cms/www/201601/290138144omh.zip
Then download the update pack of AL319 from http://www.auteltech.com/autelcms/Code%20Readers&Code%20Scanners/358.jhtml.
Do it as the user manual.
http://www.auteltech.com/u/cms/www/201409/25195248ti0b.pdf