Request] My iPad Air 1 on iOS 7.1 won't restart, possibly struck in a boot loop after loading the 'Restart springboard' option installation of the Activator app from Cydia : r/LegacyJailbreak
Full Guide] Fix iPad Stuck in Boot Loop
How to Fix an iPad Boot Loop Problems
Some 10.5-inch iPad Pro users stuck in reboot loop after iPadOS 13.4.1 | AppleInsider
SOLVED: iPad stuck in an endless loop - iPad Air 2 Wi-Fi - iFixit