Use your Windows device to update software on your iPhone, iPad or iPod touch
Using your Windows device, you can update software on your iPhone, iPad or iPod touch.
- Connect your Apple device to your Windows device. - You can connect your device using a USB or USB-C cable or a Wi-Fi connection. See Sync content between your Windows device and iPhone, iPad or iPod touch over Wi-Fi. 
- In the Apple Devices app  on your Windows device, select the device in the sidebar. on your Windows device, select the device in the sidebar. - If you connect your Apple device to your Windows device using a USB or USB-C cable and don’t see the device in the sidebar, see If your iPhone, iPad or iPod doesn’t appear in the sidebar. 
- Select General in the sidebar.  
- Select Update. - Note: You may need to first select Check for Update to see if an update is available. If an update is available, the Update button appears. 