How do I download it online or how can I install it
That's correct. You cannot update your iPhone that far. It's way too hold and underpowered to be able to run anything higher than IOS 12.5.7. It's time for a newer, more modern iPhone at this point.
That's correct. You cannot update your iPhone that far. It's way too hold and underpowered to be able to run anything higher than IOS 12.5.7. It's time for a newer, more modern iPhone at this point.
How do I download it online or how can I install it
You can't. iOS 12.5.7 is the end of the road for the iPhone 6.
Neither iOS 13 or 14 are available any longer.
To install iOS 15, you will need an iPhone 7
To install iOS 16, you will need an iPhone 8 or higher model.
That is not possible. Your 9 year old hardware cannot run a version higher than 12.5.7.
You can't and don't.
iOS 12 is the only version your phone can run.
Unable to download or install ios 13 or 14 on my iPhone 6
