How do I update my iPhone 6 Plus to iOS 12.5.7?

Follow this guidance→

Requiron wrote:

update my ios 12.5.6

[Re-Titled by Moderator]

Go to Settings/General/Software Update and follow the instructions. Here are details→Update your iPhone or iPad - Apple Support

Requiron wrote:

update my ios 12.5.6

[Re-Titled by Moderator]

ref: Update your iPhone or iPad - Apple Support

—the current . iOS 12.5.7

Restart your iPhone and try again if you have an issue