Five iPads that ran iPadOS 26 can’t install iPadOS 27: iPad Pro 12.9-inch (3rd generation), iPad Pro 11-inch (1st generation), iPad Air (3rd generation), iPad mini (5th generation), and iPad (8th generation). Apple gave all five iPadOS 26.7 on September 14, the day iPadOS 27 arrived, with fixes for 82 security vulnerabilities. iOS 27 and…