Can I update my iPhone 6 Plus to iOS 15.7.1?

This is a user-to-user technical support site operated by Apple. I can’t give you an update and Apple is not going to release a version that will run on the iPhone 6 series. It does not have enough RAM to run iOS 13. You will need to get a newer iPhone, if you want to run iOS 16 you need and iPhone 8 or later.

The iPhone 6 Plus will not ever receive an update beyond iOS 12. No amount of pleading will change that fact.

It is an ancient device that is no longer supported. If you want to use apps or features that require iOS 15 or later, you must purchase a newer model iPhone.

Your iPhone 6 Plus his not compatible with iOS 13 or higher.

That model can be updated to iOS 12.5.6, no further.

The iPhone 6 series does not have sufficient RAM to run iOS 13 or later and you cannot add RAM.

The iPhone 6, which is an older device, does not have enough RAM to run iOS 13 or later. Features included in iOS 13 and later require more RAM in order to load and operate.

Sorry, but this isn't a negotiation. The iPhone 5S, 6 and 6 Plus do not have the required hardware to update further.

pratish226 wrote:

Please sir help me sir please

That is NOT possible.

You will need a new phone.

I went to change my iPhone 6 iso to 14.0

It will never happen. Ever.