Thank you for your question and reaching out. I can understand you are having query\issues related to Update Windows 10 offline.
- If your PC is offline, then you would need to download the Windows 10 latest ISO on another working PC that is connected to the Internet, then transfer that using a USB drive to your PC, then double click the ISO file, run setup.exe and then select the Upgrade option.
Select Create Installation Media for Another PC, and choose ISO, not USB
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