The student progress on the downloaded sessions is updated utomatically sessions in Your training is updated automatically when the application is launched and when the user has an Internet connection. If the user is not connected to the Internet, he will be able to they can continue the training he has that they have already downloaded without losing the data of his their progress in the courses.
You can also perform this operation, by clicking on Synchronise, in the More menu, located Synchronise in the main menu.