discussion] Well, successfully downgraded my iPhone 5s to iOS 7.1.2, bypassed SEP and everything (thanks to the iOS 7 tethered downgrade guide by iarchive) : r/LegacyJailbreak
Fluff] successfully downgraded iPhone 5s to iOS iOS 10.3.3 ūsing MacOS VM with USB pass through (Linux). : r/LegacyJailbreak
How to Downgrade an iPhone to iOS 7.1.2 from iOS 8 « iOS & iPhone :: Gadget Hacks
Downgrading from iOS 7 to iOS 6: Why Apple won't let you | Extremetech