How do I update my iPhone to iOS 15.1?

15.1 is no longer available, if your phone qualifies, you can update it to iOS 15.8.4.

• If you have an iPhone 5S or 6/6plus, the highest you can update to is 12.5.7

• If you have an iPhone 6S through 7, or SE 1st generation, you can update to 15.8.4

• If you have an iPhone 8 or X, you can update to 16.7.11

• If you have an iPhone SE (2nd generation or later), or XR through 16, you can update to 18.4

Update your iPhone -

This link will show you how to update your iPhone, iPad, or iPod touch using WiFi -

Update your iPhone or iPad - Apple Support

This link will show you how to update using your computer -

Update iOS on iPhone - Apple Support

We’ll need to know your iPhone model as each one’s iOS updating capabilities are different. On your iPhone, go to Settings > General > Software Update. If you can update to that or beyond, it should appear. If it doesn’t, you cannot.

Hello!

Which device do you have?

Please tap here to learn how to update your iPhone. 

👉 Updating/upgrading your iPhone 

If your iPhone won’t update, please see: If your iPhone or iPad won't update - Apple Support. 

👉 Updating iOS: common issues and solutions - Apple Community

👉 If you see error 9, 4005, 4013, or 4014 when you restore your iPhone

Have a nice day, and good luck!

Which model iPhone do you have?