How can I update my software to a new version because I’m not able to download apps
How can I update my software to a new version
Question marked as
You can update your iPhone using your computer or your Wi-Fi network:
Update your iPhone or iPad - Apple Support
Did you get the message, that your account has been disabled in the AppStore and iTunes?
In that case, you'll have to contact the official Apple Support about that, only they can help in this situation:
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If you see a message that says "Your account has been disabled in the App Store and iTunes," contact Apple Support for help.
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copied from: If a message says 'Your account has been disabled in the App Store and iTunes' - Apple Support