Why can’t my iPhone6splus can’t update
When I click on software update it doesn’t open
iPhone 6s Plus, iOS 14
See this article.
If your iPhone or iPad won't update - Apple Support
The iPhone 6S+ cannot be updated beyond iOS 15.7.7.
2 replies
There are about a dozen different reasons why an update will not run. Work you way through this Apple Support document:
If your iPhone or iPad won't update - Apple SupportAppleOfficial Apple Support › en-us
Why can’t my iPhone6splus can’t update