I have a late 2012 mac mini w/ 16GB 512 SSD that is still running Mavericks 10.9.5 I have an iPhone 6s on iOS 9.3.5, iTunes ver 12.4.3, I can't update the iOS until I update the iTunes ver which also leads into updating my OSX. When El Capitan was released I downloaded it from the app store (it's in my downloads folder) but I never installed it. I'm finding that my 6s on iOS 9 won't run some critical apps so I really need to update my phone and unfortunately the only signed iOS is the latest 11 If you were in my case would you update from Mavericks to El Capitan (I wished I had downloaded Sierra) or would you just update from Mavericks to HS? I'm kinda nervous but I also think my mac mini is spec'd to handle either. I also only have 53GB left of free space on my SSD.