Q: Disabled iPhone, can't connect to iTunes (iTunes 12)

Hey Leander Ekker,

If you are unable to reset your device due to it being disabled and your iTunes app is not recognizing the iPhone, please use the steps in the link below to successfully reset it.

If you forgot the passcode for your iPhone, iPad, or iPod touch, or your device is disabled

I'd check out this section specifically:

Erase your device with recovery mode

If you've never synced with iTunes or set up Find My iPhone in iCloud, you'll need to use recovery mode to restore your device. This will erase the device and its passcode.

1. Connect your iOS device to your computer and open iTunes. If you don't have a computer, borrow one from a friend, or go to an Apple Retail Store or Apple Authorized Service Provider. 
2. While your device is connected, force restart it: Press and hold the Sleep/Wake and Home buttons at the same time. Don't let go when you see the Apple logo — keep holding until you see the recovery mode screen.
   
3. When you see the option to Restore or Update, choose Restore. 
   
   iTunes will download software for your device. If it takes more than 15 minutes, your device will exit recovery mode and you'll need to repeat steps 2 and 3.
    
4. Wait for the process to finish. Then you can set up and use your device.

Thanks for using Apple Support Communities. These steps should get your iPhone up and running in no time!

Have a great day.