Can i receive support or feedback my iPhone 6plus sorfware update?
How can used iPhone 6plus and software update? How can provide this? or find a support to update this iPhone 6plus.
iPhone 6s Plus, iOS 12
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Is your device compatible to update to the new version? See the Apple Support article(s) below.
iOS 14 and iPadOS 14 Compatible Devices
iOS 13 and iPadOS are compatible with these devices - Apple Support.
See the articles below.
Get help with over-the-air iOS updates
Update – Can’t or can’t restore
Have you tried using iTunes on a computer or Finder if running Catalina or later to do the update?
Update software on iOS devices in iTunes on Mac
If you see an error when you update or restore your iPhone, iPad, or iPod
Updating iOS: common issues and solutions