Error installation of iOS 15.6.1
Error installations of downloaded ios15.6.1
what will I do
iPhone 6s Plus, iOS 12
Question marked as
Check iPhone type & iOS version -> Go to: Settings -> General -> About.
If it is an iPhone 6 Plus you can update to the last security updates iOS 12.5.6 -> released August 31, 2022.
Go to Settings -> General -> Software Update -> Download and Install.
If it is an iPhone 6S Plus you can update the iPhone to iOS 15.6.1, see this Apple article:
iPhone models compatible with iOS 15.6.1.
iPhone models compatible with iOS 15.4 – Apple Support (UK)
See the following Apple articles:
Update your iPhone, iPad, or iPod touch
Update your iPhone, iPad, or iPod touch - Apple Support (IN)
If your iPhone, iPad or iPod touch won’t update
If your iPhone, iPad, or iPod touch won't update - Apple Support
You can do the update via PC, see this Apple article: Update software on iPhone, iPad or iPod touch in iTunes on PC
Update software on iPhone, iPad or iPod touch in iTunes on PC – Apple Support (UK)
If you have a Mac see this Apple article: Update your iPhone, iPad, or iPod touch with the Finder
Update your iPhone, iPad, or iPod touch with the Finder - Apple Support
You need about 6 GB device storage and good Service & Wi-Fi.
If they are On, turn Off Hotspot & VPN.