Updating iPhone 15 Plus from iOS 17 to iOS 18

"Updating iPhone 15 Plus from iOS 17 to iOS 18: In theory can I have an iPhone 15 Plus out of the box on iOS 17 and update it to iOS 18 instead of iOS 26? It's just that right now I don't have a specific one on my hands, but I need to find out if it's possible to do it"

------

Get a Preconfigured iPhone:

No. However, you can purchase an iPhone preconfigured with iOS 18, but just be at to where you purchase it from, such as off of eBay or Amazon or Craigslist.

"Eh. Thank you very much. I just work with music and there is a program that works only with iOS 18 and Mac OS sequoia is not newer, not older. And now I somehow have to get an iPhone on iOS 18"

-------

You are welcome.

Getting Around This:

Well, that's what purchasing a preconfigured iPhone is all about. Just be certain not to perform an update.

Provide the App:

What's the program(app), BTW? See if they have a version this is compatible with iOS26. Perhaps they have yet to release a version, or have updates for this.

Contact the Developer:

Ask the Developer what feedback they have for you on this; you'll likely find their Contact Us info in the app's site of the App Store, or in the help menu(on your Mac, if applicable).

"No. This is a rare paid and also little-known program for correct sound correction on mobile phones. Specifically, I am personally familiar with the developments, and they are not ready to transfer and update the program for the 26th OS line. In fact, I'm tied to it. Thank you again, I'll go look at the possible options"

-------

You are most welcome.

Excellent job troubleshooting this!

TheBessmertnych wrote:

No. This is a rare paid and also little-known program for correct sound correction on mobile phones. Specifically, I am personally familiar with the developments, and they are not ready to transfer and update the program for the 26th OS line. In fact, I'm tied to it. Thank you again, I'll go look at the possible options

What a terrible developer.