an error occured while checking for a software update

Greetings harera22dec,

Thanks for using the Apple Support Communities!

I understand that while attempting to update to the latest version of iOS on your iPhone, you are receiving an alert that says “An error occurred while checking for a software update.”

To begin troubleshooting this situation, I would first suggest working through the steps from the On your iPhone, iPad, or iPod touch section in the following article and then attempting the update again.

On your iPhone, iPad, or iPod touch

If you can't connect to the iTunes Store on your iPhone, iPad, or iPod touch:

1. Make sure that your date, time, and time zone are correct. Tap Settings > General > Date & Time. Time Zone might list another city in your time zone.
2. Make sure that your iOS software is up to date. Tap Settings > General > Software Update to check for updates. You can also connect your iOS device to iTunes and click Check for Update
   on your device's Summary page.
3. Check and verify that you're in range of a Wi-Fi router or base station. If you're using cellular service, make sure that cellular data is turned on from Settings > Cellular. If you're connected to cellular data, larger items might not download. You might need to connect to Wi-Fi to download apps, videos, and podcasts.
4. Make sure that you have an active Internet connection. Check your device's user guide for help with Internet connection.
5. Check to see if other devices, such as portable computers, are able to connect to the Wi-Fi network and access the Internet.
6. Reset your Wi-Fi router by turning it off and then on again.

If there's still an issue, learn what to do if your device won't connect to a Wi-Fi network.

If you can’t connect to the iTunes Store - Apple Support

If the issue continues, try updating your iPhone from another network or from iTunes on a computer as the following article suggests.

If you get a message that says "an error occurred downloading iOS," try again later. If this happens again, try updating your device using another network or use iTunes to update your device.

Get help with over-the-air iOS updates - Apple Support

Have a great day!

Hey harera22dec,

Thanks for responding with this information. Have you tried updating your iPhone using iTunes on a computer?

If you get a message that says "an error occurred downloading iOS," try again later. If this happens again, try updating your device using another network or use iTunes to update your device.

Get help with over-the-air iOS updates - Apple Support

Best