What is the latest update version in iPhone 6??

Welcome to the Apple Support Communities.

Unfortunately, you cannot update to any version of iOS newer than iOS 12.5.5 on iPhone 6.

If you need iOS 15 (the current version of iOS), you need an iPhone 6s or newer.

Jack

samay1807 Said:

"What is the latest update version in iPhone 6??: What is the latest update in iPhone 6 it's showing 12.5.5 if yes please update it to 13.0 as it doesn't let apps to be downloaded without this version"

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Updating an iPhone:

Determining if an Update will Install:

How to do so...

I. 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 iOS13 and/or iOS14 and/or iOS15 then it is because you iPhone does not meet the hardware requirements for this iOS version(s).

II. 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:

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

Its not possible to update iPhone 6 to ios 13

Heres Solution for the apps :

1.Download itunes sign in your same iphone apple ID download apps in Itune first you want in iphone 6

2.When you downlaod an app in itune and go to the appstore for similar app instead of GET option there will be a Cloud icon now click on Cloud icon you can now download an older version of your app compatible with ios 12

No apple stop support updating the iPhone 6 ,6 plus and lower.