I have an iPad air 2014. My current update is 12.5.4 I have several apps that you need 13.5 or better to use the app. How can I update to a newer iOS update

This iPad that you are using is considered vintage. It does not have the hardware needed to support anything over iOS 12.5.4 which is the problem that you are running into when you are saying that the apps you are running want you to update. Unfortunately the only way that you are going to be able to upgrade and use the newer versions of the apps that you are wanting to use is to purchase a new iPad. You are going to need something with newer and more powerful hardware to be able to run any newer versions. The iPad Air 2 is still supported and can run the most current, but I would suggest something a little newer as it probably won’t be supported much past the most current version.

You have an 2013 iPad Air 1st generation.

The 2013 iPad Air 1, iPad Mini 2 and 2014 iPad Mini 3 cannot upgrade beyond any version of iOS 12, currently at iOS 12.5.4.

Sorry.

These iPad models have overall internal hardware that is too old, too underpowered and incapable of running all of the new, advanced and internal hardware resource intensive features of iPadOS.

These iPad models will soon be 7 and 8-years old, in 2021.

Sorry.

There is one last thing you can try/attempt, if you need older versions of apps.

If you own another much newer iOS device that can run iOS/iPadOS 13 and later, you can install the most recent version app/s onto that more recent iOS device.

Then go back to your older iPad, open the iOS App Store, go to the Purchases section of the store app, search for the app/s you wish to try and download to that older iPad and see if an older version of the app is allowed to be downloaded/installed to that older iPad.

These newer iOS/iPadOS devices must use your same Apple ID user account and password.

Failing that OR IF NO joy, then there is nothing more to be done.

It's 2021, now.

If you need/want an iPad with an up to date iPadOS with access to current, updated apps, then you really need to seriously consider a purchase of a new iPad model OR a much, MUCH “newer” and less expensive, refurbished or used iPad models, from better known, trusted sources, like other Apple product/device retailers/resellers, some locally or from online, on the Web/Internet, capable of running the latest iPadOS versions.

There are PLENTY of newer, older iPad models that can run the latest, current versions of iPadOS.

If you need OR ONLY able to purchase older, less expensive iPad models, look at older IPads from 2014 and later.

All of these older model iPads below CAN run the latest iPadOS versions and the up and coming iPadOS 15.

2014, 9,7 inch screen iPad Air 2 models

2015, 7.9 inch screen iPad Mini 4 models

2015-2017, 12.9 inch screen iPad Pro models. ( 1st gen Pencil support )

2016, 9.7 inch screen iPad Pro models ( 1st gen Pencil support )

2017, 9.7 inch screen iPad 5th gen models

2018, 9.7 inch screen iPad 6th gen models (1st gen Pencil support )

2019, 10.2 inch screen iPad 7th gen models ( 1st gen Pencil support )

2020, 10.2 inch screen iPad 8th gen models. ( 1st gen Pencil support )

Get the largest internal data storage model you can afford as NO Apple iOS device has expandable storage.

I am sorry that you had to learn all of this, but this does not change any of the facts regarding these very old iOS devices.

Sorry & Best of Luck to You!

Replacement with a newer (used) or new iPad is your option. The older iPad models lack the hardware resources for newer versions of iPadOS, and there are no hardware upgrades available. Any recent iPad will be faster and more capable, as well.

You don't.

Read everyone's explanations, above.

Your iPhone is too old for any more IOS upgrades/updates.

The intenal hardware is too old and not sufficiently powerful enough.

Sorry.

amilsuli wrote:

how to get new update because im still use ios 12.54 iphone 6plus and some app needs new update ios..if cannot support iph6 plus tell ask yes or not...

An iPhone 6 and an iPhone 6 Plus cannot run iOS 13 or later, and is limited to iOS 12 (iOS 12.5.4, currently).

An iPhone 6 or iPhone 6 Plus has half the memory of the oldest iPhone supported with iOS 13 and iOS 14; of the iPhone 6s and iPhone 6s Plus.

There are no hardware upgrades.

There is only a newer (used) or new iPhone.

Any recent iPhone will be substantially more capable than an iPhone 6 Plus, as well.

Indeed, your iPad is up to date. The first generation iPad Air, iPad mini2 and mini3 can only be updated to iOS 12.5.4.

Apple ended major update support for these models of iPad in September 2019 - although they since continue to receive “point” security updates - the most recent being released just a few weeks go. These devices cannot be updated to iPadOS 13 (or any later major versions of iPadOS) as the internal hardware does not meet the minimum technical requirements (CPU and RAM) for newer versions of iOS/iPadOS.

Some App developers have dropped support for iOS versions preceding iOS 13.x for technical reasons (often because APIs or software libraries upon which they rely have been updated in the new version of iPadOS, making their App incompatible with earlier versions). 

Whilst many App titles remain compatible with your iPad, if you want or need to access to Apps requiring the most recent versions of iOS, you’ll need to consider replacement of your iPad with a newer or current model that supports iPadOS14.

Sorry, I appreciate that this may not be what you were hoping to learn.

I hope this information provides helpful clarity as to your available options - and the limitations of your existing iPad.

how to get new update because im still use ios 12.54 iphone 6plus and some app needs new update ios..if cannot support iph6 plus tell ask yes or not...