How to update iPhone 6 iOS 14 version please help me

Last time: It is NOT POSSIBLE to update your phone to anything later than 12.5.6. It is NOT compatible with anything higher.

If you want apps that require something later, you need to BUY A NEW PHONE.

That is not possible. The iPhone 6 is not compatible with anything later than ios 12.5.6.

Hello,

you cant Update you iPhone 6 to iOS 14 or 13 you can only stay at iOS 12.5.6

https://www.cnet.com/tech/services-and-software/ios-14-compatible-devices-all-the-iphones-that-support-apple-new-operating-system/

Its Because your hardware, CPU and RAM is old and cant support newer versions of iOS

Hope I Helped

No. 12.5.6 is as far as it can update.

It lacks the hardware, CPU and RAM, to run anything newer.

The solution to your problem is to buy a new phone.

I’m afraid there is no hope.

The only way to solve your problem is for you to buy a newer iPhone.

You cannot install Facebook on an iPhone 6 anymore. It's too old. Nothing can be done at this point.

You cannot install Facebook on an iPhone 6. You need a device capable of running at least iOS 13.4.

Your iPhone 6 is now too old to run the current Facebook app version.