The App Store only shows updates for the OS you are using at the moment, in your case Yosemite 10.10.5.
If you want to go to another newer OS that is called an upgrade. This can be done through the App Store using the following link.
And while the library doesn’t have the variety of Independence Free, that in no way detracts from the quality of the included sounds—they’re truly representative of EastWest’s libraries, and that’s a very good thing.Play is a sophisticated 32/64-bit engine with VST/AU/RTAS/standalone compatibility but is easy to navigate (Figure 4). East west quantum leap for mac. Its interface also adapts to different libraries.
High Sierra is the last/ newest OS your Mac can use. Scroll down to Section 4 and click on Get macOS High Sierra.
Make a full back up of your Mac before upgrading.
The App Store keeps old OS X installers available under the Purchased tab. Since this isn’t working for Patrick, the better course is to create on another Mac a bootable Yosemite installer. However, that pile of macOS installers you collected on that old external drive became worthless on October 24, 2019. Any old macOS you have won't run anymore, because the security certificates on.
Check to see with the developers of any third party apps you use that there are updates available so they will continue to work in the new OS. Another thing you need to check is if any printers/ scanners etc you use have updated drivers and software so they too can continue to function in the new OS.
Feb 3, 2019 11:15 PM