To update TS401, you need install MaxiLink on your PC. You can download it from the CD or from the following link: http://www.auteltech.com/u/cms/www/201504/01205228iezq.rar
And then download the update pack from the following link.
http://www.auteltech.com/autelcms/u/cms/www/201509/11045607nk34.rar
For the detailed procedure, please refer to the page 30 in the following user manual:
http://www.auteltech.com/u/cms/www/201310/24004405koh9.pdf