Help me update my iPhone 6 iOS 12.5.5

You use it the same way you've always used it.

An iPhone 6/6plus can't be updated beyond 12.5.6, it doesn't have the hardware needed to run anything higher.

If you need a higher iOS version, you will have to purchase a newer phone.

elorm225 Said:

"Help me update my iPhone 6 iOS 12.5.5"

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Updating iPhone 6 to iOS 12.5.5:

You Can't. Only the latest-compatible version would install: iOS 12.5.6.

So. Update Using a Computer:

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:

Use my User Tip:  Update your iPhone Using a Computer - User Tip

elorm225 Said:

"How are we suppose to use iPhone"

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How to Use an iPhone:

How exactly do you want to use it? Or is it just not working for some reason? If so, what exactly is the issue? And how have you troubleshot it thus far?