How do I reinstall iOS on my iPhone?

Reinstall iOS

1. Connect the iPhone to your computer using the USB cable. …
2. Click the name of your iPhone in the Devices section and then click the “Summary” tab for your device.
3. Click the “Restore iPhone” button. …
4. Click “Restore.” The license agreement document may display.

How do I wipe and reinstall iOS?

How to factory reset and restore your iPhone

1. Open the Settings app.
2. Tap “General,” and then tap “Reset.”
3. Scroll and select “Reset.”
4. Tap “Erase all Content and Settings,” and choose “Erase Now.” If for some reason you haven’t already backed up your iPhone, this is your last chance — you can choose “Backup then Erase.”