Instead, you only have the option of getting the update wizard or the media creation tool. The company makes ISO files available for every version of Windows 10 including Windows Update (2004 version), the only problem is that when you go to the support site, you don't have the option to download the file.
You can download the Windows 10 ISO file without the Media Creation Tool to update or install the latest version of the operating system, but Microsoft hides the option for Windows 10 users.