Jan 23, 2017  While the iOS 10 does come with a lot of brand new features that most of us cannot wait to try out, those user installed iOS 10 have already reported a number of issues.

Why Does 3utools Keep Saying Firmware Check Code Error 3utools

Update your Mac or PC

Install updates for your Mac. If you have a PC, get updates from Microsoft. If you're using iTunes, make sure you have the latest version.

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Plug directly into your computer

Plug your iOS device directly into your computer's USB port (not into an attached keyboard or USB hub). If you still see an error alert, try a different cable.

Restart

Turn off your computer and your device. Then turn them on again.

Here's how to restart your iPhone, iPad or iPod touch.

Check your computer’s security software

You might need to update, change or uninstall software that could be interfering with your computer's connection with iTunes.

Try again

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Get more help

Why Does 3utools Keep Saying Firmware Check Code Error Windows 10

If you tried these steps and saw the error again, follow the steps for your error code.