November 14, 2019 these release notes contain important information regarding the installation and contents of the update important - the autocad lt 20201 update contains the previously released block performance hotfix for autocad lt 2020 installation - if you have installed autocad lt 202011 update, you will need to uninstall the update 11 before applying update 12. Autocad 2020 download updates. Download a free autocad trial for windows or mac, or download free autocad trials of specialized toolsets for architecture, engineering, electrical, mep, mechanical design, and more bifrost tutorials march 2020 free trial try autocad free for 30 days try autocad