How do I update my iPhone 6 to iOS 15.1?

The iPhone 6 cannot be updated to iOS 15.

iOS 12.5.7 was the last and final update for the iPhone 6.

You really need to start looking for a new phone.

zedanjsko wrote:

ISO15.1

The iPhone 6 can be updated to iOS 12.5.7, no further.

If you have updated your iPhone 6, that is good news.

If you have not, the iPhone 6 cannot be updated to iOS 13, 14 or 15.

Updated my iPhone 6

khorshed249 wrote:

Updated my iPhone 6

Can we assume you have already read the replies above? If so, and you still have an issue, you will need to provide more information than “Updated my iPhone 6”.