During the downgrade process, it's possible to encounter unforeseen issues or errors. If you encounter any problems while you downgrade iOS 16 to iOS 15, it's recommended to check your internet connection, update iTunes to the latest version, or try using a different USB cable. If the issue persists, seeking assistance from Apple Support or reputable tech forums can be helpful in troubleshooting the problem. Remember, having a backup ensures you have a safety net to fall back on in case of any difficulties.