Several users have reported that they are receiving error messages when they try to update their device’s (iPad, iPhone, iPod Touch) software wirelessly. They get this error message: “Unable to check for update. An error occured while checking for a software update”.
How to troubleshoot. Try each step until you resolve your issue:
- You may want to try updating your software via iTunes. Updating your software may fix this problem.
- Settings > Wi-Fi and turn Wi-Fi off and then on again.
- Restart your iOS device.
- Reset network settings by tapping Settings > General > Reset > Reset Network Settings.
- Change your DNS settings. To do that, simply tap Settings > Wi-Fi then Tap the blue arrow next to your current Wi-Fi network. Tap the “DNS” field and enter the DNS servers; 220.127.116.11, 18.104.22.168 (Google’s Public DNS). After this, try a software update.