I wasn’t able to update IOS 15.5
Need to update iOS 15.5
Hey there,
See>>>Update your iPhone, iPad, or iPod touch - Apple Support
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if you have trouble with update See>>>If your iPhone, iPad, or iPod touch won't update - Apple Support
if you have iPhone 6 or less you can’t update it to newer version the last update for this device is iOS 12.5.5