iOS 14.1.1 update
How to update my iOS iPhone from 12.5.6 to 14.0.1
iPhone 6
How to update my iOS iPhone from 12.5.6 to 14.0.1
iPhone 6
You can not. That model is not compatible with iOS 13 or higher.
You can not. That model is not compatible with iOS 13 or higher.
An iPhone 6 does not support any version of iOS newer than iOS 12.5.6.
You cannot install iOS 14 on it.
iOS 14.0.1 download
iOS 14.1.1 update