New verision
My iPhone old verision.is experience so new verision is downlode app is not downlode so new verision software downlode
iPhone 6, iOS 11
Question marked as
Check iPhone type & version -> Go to: Settings -> General -> About.
If it is an iPhone 6 -> iOS 12.5.5 is the last security updates for iPhone 6, -> released 23 september 2021.
Go to Settings -> General -> Software Update -> update to iOS 12.5.5.
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 to have a good Service & Wi-Fi.
If they are On, turn Off Hotspot & VPN.