Updating your iPad usually happens wirelessly, but sometimes you hit a wall. If your device displays the specific message to connect to iTunes, it generally means the update is too large for your available storage, your Wi-Fi is unstable, or the iPad’s operating software has encountered a critical error.
A simple reboot of the iPad and the computer resolves 90% of handshake errors. Updating your iPad usually happens wirelessly, but sometimes
Look for fraying or debris inside the charging port. Look for fraying or debris inside the charging port
Before you begin, ensure you have the necessary hardware. You will need a certified Lightning or USB-C cable (depending on your iPad model) and a computer with a high-speed internet connection. If a previous update was interrupted, the iPad
If a previous update was interrupted, the iPad enters a "Recovery Mode" state where it requires a computer to re-flash the operating system.