@Ayush Singh
Hi,
If you want to update to latest version, the fastest way to get the upgrade is through Media creation tool or ISO file.
Before making any changes in your computer, I suggest you to create a System Restore point, so that you can restore back your computer to previous working state if something goes wrong.
The Windows 10 2004 ISO is available from the Microsoft Windows 10 ISO download page:
https://www.microsoft.com/en-us/software-download/windows10
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