I want to update my iPhone 6 Plus to iOS 14.1

Sorry, but that is not possible for an iPhone 6.

That model can be updated to iOS 12.5.6, no further.

Abdulatife1122 wrote:

I want to. Update my iPhone 6 Plus

That is not possible.

No

ewebiyi wrote:

Update my iOS

Despite having seemingly solving your issue, you will find that the answer provided above is 100% accurate.

I want to update my iPhone 6 Plus

I want to. Update my iPhone 6 Plus