Old version of EDT

If you want to open a base saved with an old version of EDT, you may have to save your base with an intermediate version. All old versions of EDT can be downloaded from the Index Education’s Internet site, from the page EDT > Downloads > Old versions.

Base save with a 2018 to 2020 version of EDT

Directly open the base with EDT 2021.

Base save with a 2015 and 2017 version of EDT

Install the evaluation version EDT 2018 to save the base before opening with EDT 2021.

Base save with a 2012 to 2014 version of EDT

Install the evaluation version EDT 2015 to save the base. Then renew the operation with EDT 2018 version before opening with EDT 2021.