My MAMP PRO 5.1 will not update MAMP GmbH January 29, 2019 13:46 Updated This is a known problem. Please download the installation package for version 5.2 from our website. In the future, you should be able to update through the app. Related articles Why do I need admin rights to install MAMP PRO? Is it possible to add an updated version of PHP? What is the standard procedure for updating MAMP PRO?