Update iPhone 6 iso 12.5.6

It is not possible to update the iPhone 6 any higher than iOS 12.5.6. That is the last update for the iPhone 6.

If you need to run a higher iOS like iOS 15 or iOS 16, you will need a new phone.

An iPhone 6 isn't capable of 13 or above. If you're trying to install 12.5.6, describe what happens.

(231869)