7/10 (Easy if you know the trick; impossible if you don't).
Apple’s iOS 12.5.7 is a legacy security update for older devices (such as the iPhone 5s, iPhone 6, iPad Air 1st gen, iPad mini 2 & 3, and iPod touch 6th gen). The .
. Tap the cloud icon next to YouTube, and you may be prompted to download the last compatible version for your device. Using a Newer Device for "First Download"