log in to your Autel client go to the support page and look for update client first box is this
Name: Maxi PC Suite
Model: MD808,MaxiSYS Pro,MaxiSys Elite..
download and install ' when the program has finished installing insert the sd card for your 802 into a card reader run the update tool enter your Autel ID and Password and wait for it to open it should detect the card and search for any updates and display them from there you just install what you want " you have to have you tool registered " depending on region and who or where you got the tool may also depend on what updates are available for you