How can I create a bootable usb for Windows 11 25H2?

To create bootable USB for Windows 11 25H2 without enrolling in the Windows Insider Program, you'll typically need the official ISO file for Windows 11 25H2 once it becomes publicly available or leaks online. 

Official Source:
1. Visit the Microsoft Windows Insider Preview Downloads page. Usually, Microsoft provides ISO files for the stable release and Insider builds.
2. From Microsoft’s Media Creation Tool:
Microsoft’s Media Creation Tool can be used to create installation media for the latest Windows 11 version, but it generally downloads the latest stable version.
3. Leaked or Third-party Sources:
Be cautious with unofficial sources. If you find a trusted leak or repository, ensure it's genuine to avoid malware.

When creating bootable USB for Windows 11 25H2. If you don’t want to enroll in the Insider Program, avoid using the official Insider preview builds directly, as they are meant for testing and may be unstable. Keep an eye on official Microsoft channels for the official release of Windows 11 25H2.