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 I cannot update my MAMP PRO 5.0.4, 5.1, 5.1.1 Why do I need admin rights to install MAMP PRO? Are updates free of charge? Why does MAMP PRO need access to my keychain? I really need Postfix! Please bring it back, please, please, please!