Why is my iPhone 6 not update to the latest I iOS 15

A_bash147 Said:

"why can’t I update my iPhone 6 to the latest ios 15"

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Thank you for the screenshot.

Upgrading an iPhone 6 to iOS15.5

You Can't. What you are looking to do is not an option. This is because your iPhonemodel does not have the RAM and other hardware required to go past iOS12.

For reference...

Updating an iPhone:

What to Update: Installed apps and the iOS.

How to do so...

A. Verify Compatibility:

Identify your iPhone model. The first thing that comes to mind in incompatibility being the culprit. So, confirm the model of your iPhone. If iPhone model is incompatible with iOS15 then it is because you iPhone does not meet the hardware requirements for this iOS version(s).

B. If Compatible...

1. Back Up First:

IMPORTANT: If you have an option to update, however, then be certain you backup your iPhone first. That way, you will have something to restore your iPhone from should anything go wrong with the update

then...

2. Proceed with the Update:

Go Here:  Update your iPhone Using a Computer - User Tip