I can't upgrade os x 10.6.8 to any of 10.7, 10.8, 10.9, 10.10, 10.11, or macOS 10.12
Greetings
am using macbook6,1 os x Snow Leopard 10.6.8 I tried to upgrade as they said by app store to any newer system operation but when I do error message says " This update requires OS X version 10.7 or later ". I tried even update my system to os x 10.7 but I couldn't find it in app store. and anything I want to download or purchase it from app store give me the same message error. I tried even download os x lion and el capitan as dmg file and make it a bootable usb flash drive still the same problem can't upgrade.
Will anyone please help this issue.
iPhone 4, iOS 5.0.1