How do I update my Apple Music account on an iPhone 6 Plus?

Are you asking about subscribing to the Apple Music service?

• Apple Music requires iOS 10.0 or later.
• Apple Music Classical requires iOS 16.0 or later.

Going just by this, it would appear that you can use the Apple Music subscription service on an iPhone 6 Plus, and that if you are a subscriber, you can listen to classical music using the Apple Music app.

You cannot use the Apple Music Classical app (which is intended to provide an enhanced experience for classical music fans) because your iPhone is not capable of updating as far as iOS 16.0.

----------

Or are you asking about the Apple Music for Artists app?

https://artists.apple.com/support/1110-apple-music-for-artists-on-ios

"The Apple Music for Artists iOS app can be used from an iPhone running iOS 16 or later and the Artists app must be version 3.5 or later. To access all the latest features of the Artists app, be sure you’re running the latest version. Apple Music for Artists on iOS is currently only available for iPhone."

If you are an artist who is publishing music on Apple Music, and you want to use that app, you will need to replace that iPhone 6 Plus with a newer phone.

Hello~ Do you mean update your version of iOS? If so your iPhone 6 Plus can’t be updated any further than iOS 12. If you mean something else please post back with details.

~Katana-San~