How to put your iPhone or iPad in DFU mode to fix it as a last resort

DFU mode can help you recover your iPhone or iPad using a computer.
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Using iPad Recovery Mode to Fix a Frozen or Unresponsive Device

Recovery Mode: Connect iPad to a computer > open Finder (Catalina or later) or iTunes > restart > Update from the recovery screen. If you don't have access to a computer, use iCloud to wipe the iPad ...

How to put your iPhone in recovery mode when all else fails

Recovery mode allows you to update or restore your iPhone using a computer with iTunes or Finder. Here's how to access it.
Yahoo

Reset Your iPad Without a Password Using These Simple Steps

This article covers two ways to reset an iPad to factory settings without the password. How Do I Reset My iPad to Factory Settings Without the Passcode? Apple added ...