Windows 10 Insider Preview Build 15025 ISO is now available for downloading.
Steps to follow:
1.If you are a Windows Insider user then visit Windows Insider’s site to sign in if you are not a Windows Insider user then you have to sign up
2.Now Select Edition [Windows 10 Client Insider Preview – Build 15025]
3. Select the product language and click Confirm tab.
4. Select 32 Bit or 64 Bit version.
5. Click Save as
6. Select desired destination.
7. Save to download.
By the way I am using DownThemAll (or just dTa) is a Mozilla Firefox extension that adds new advanced download capabilities to Firefox browser.