hello,
i've got windows 7 now, but if I install this build (but downloaded from other web, not from microsoft) can i still get official windows 10?
Yes. But make sure you have an official build 10166. But it seems that you are new to this so I would recommend not installing the Win 10 on the same drive as Win 7. If you have a spare drive, that is the best option. Otherwise, use a virtual machine.
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826885259845304320
Source: https://blogs.windows.com/windowsexperience/2017/02/01/announcing-windows-10-insider-preview-build-15025-pc
:arrow: Download Windows 10 Insider build 15025 ISO file from Microsoft
Source: Windows 10 Insider Preview Build 10532 for PC | Blogging Windows
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