Please Update New iPhone 8plues ios14.5.1
Update iOS 14.5.1
[Image Edited by Moderator to Remove Personal Information]
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Only you can update your own device, nobody else can do it for you.
Follow the steps here: link-> Update your iPhone, iPad, or iPod touch - Apple Support
Please do not post your Apple ID and password in a public forum where anyone can see them.
I have asked the hosts to remove the image for your security.