If you can't update or restore your iPad - Apple Support

You can put your iPad in recovery mode, then restore it using your computer.

iPad Unavailable or Security Lockout? Quick Fix

How to update your iPad Apple Support

iPad Troubleshooting: Fix Common Problems - Apple Toolbox

Restore your iPhone, iPad, or iPod to factory settings - Apple Support

IOS 15 update fail - Apple Community

Restore your iPhone, iPad, or iPod touch from a backup - Apple Support

If you see No Service, Searching, or SOS on your iPhone or iPad - Apple Support

SOLVED] iPad Stuck in Recovery Mode and Won't Restore

If your iPhone or iPad won't connect to a Wi-Fi network - Apple Support

How to Fix an iPad That Won't Update

Set up your iPhone or iPad - Apple Support

How to Bypass the iPad Unavailable Message in 2024 - EaseUS