User profile for user: Niel Niel User level: Level 10 731,741 points Apr 4, 2022 3:09 PM in response to A_M_A_N Back up your data, check your applications for compatibility, and if your MacBook Air is a 2012 or newer model, click on Mojave. If you get a Mac App Store preview page, change the https at the beginning of its address to macappstore.To look up the programs, click here.(216641) Show more Less Reply Link
User profile for user: tjk tjk User level: Level 9 51,126 points Apr 4, 2022 3:09 PM in response to A_M_A_N Hi,See: How to get old versions of macOS - Apple Support Show more Less Reply Link