How do I update to Build 9855?

Discussion in 'Windows 10' started by armyswat, Oct 7, 2014.

  1. Mobocratic Asylum

    Mobocratic Asylum MDL Member

    Mar 22, 2010
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    #21 Mobocratic Asylum, Oct 8, 2014
    Last edited: Oct 8, 2014
    9857.jpg

    and

    9858.jpg

    WUT? Both appeared just after changing from fbl_release to winmain.
     
  2. Chris123NT

    Chris123NT MDL Expert

    Oct 23, 2010
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    well at least we know the branch that the preview updates will be coming from (fbl_release) is building daily.
     
  3. abbodi1406

    abbodi1406 MDL KB0000001

    Feb 19, 2011
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    Currently there are 3 branches that have active preview builds:
    fbl_release, winmain, winmain_prs

    Enterprise edition has one more:
    fbl_kpg
     
  4. xomniversex

    xomniversex MDL Member

    Sep 20, 2012
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  5. abbodi1406

    abbodi1406 MDL KB0000001

    Feb 19, 2011
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    There are plenty of active branches as listed on that betawiki page :D

    what i ment is that for us regular users, only some branches could give you "Download new preview build" in PC Settings
    other would give "No new preview build was found, please try again later"
     
  6. Snuffy

    Snuffy MDL Expert

    Jan 7, 2008
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    #26 Snuffy, Oct 8, 2014
    Last edited: Oct 8, 2014
    almost all the info can be found in view of the EventViewer ...

    besides 9855 is old... 9857 is the newer
     
  7. Mitchell7

    Mitchell7 MDL Junior Member

    Oct 22, 2010
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    I did a quick bit of digging using Process Monitor.

    By the looks of it when the download it initiated it queries another registry key HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Flighting\Build and then from within that a sub key named UpdateID which at a guess would possibly contain information regarding the downloaded build.

    Update_Capture_1.jpg

    The download also kicks off an https request to MSFT which can be seen from the output.

    Update_Capture_2.jpg
     
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  8. LLStarks

    LLStarks MDL Member

    May 17, 2011
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    Why do I have the feeling that Microsoft is showing us more than they intended?

    They are giving us incredible insight to their build strings and how to exploit them in future technical preview cycles.
     
  9. mechanicweb

    mechanicweb MDL Member

    Sep 1, 2011
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    Is there anyone who could actually download these builds?
     
  10. murphy78

    murphy78 MDL DISM Enthusiast

    Nov 18, 2012
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    Not to my knowledge, but I could be wrong.
     
  11. s1ave77

    s1ave77 Has left at his own request

    Aug 15, 2012
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    Most likely we would have heard about such efforts :cool2:.
     
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  12. mechanicweb

    mechanicweb MDL Member

    Sep 1, 2011
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    Then why there is such rumor that there are actually newer preview builds if nobody downloaded them?

    And also why the registry hack to download these builds?
     
  13. s1ave77

    s1ave77 Has left at his own request

    Aug 15, 2012
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    The builds ain't rumours as you can see them in Event log after download failed :cool2:. Question is what conditions allow to download them.
     
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  14. hounsell

    hounsell MDL Novice

    Oct 9, 2014
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    These updates that we've logged use the Windows Store infrastructure.

    This poses a difficulty for those trying to break into it because obviously there's a lot tighter checks and many more layers of protection with the Windows Store. It doesn't just hand out data, you need a cryptographically-signed and encrypted authentication ticket that expires within a certain period in order to download anything successfully.

    Basically, I'd consider it highly unlikely for any of these builds to get out. That said, interestingly, the Windows 7 TP upgrader uses the traditional Windows Update which is not secured in any meaningful way, so if a build were to pop up on here, we'd definitely be able to grab it. My guess though, is that this will only be reserved for public builds anyway.

    Still, it's fun to see all these fbl lab names. fbl_mobs and fbl_lad are my favourite two so far.
     
  15. luke

    luke MDL Senior Member

    Jun 22, 2007
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    Probably the same condition which does let you name your computer MS gives every install its own name.
     
  16. mechanicweb

    mechanicweb MDL Member

    Sep 1, 2011
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    And what are these branch names for? What difference do they impose?
     
  17. generalsu

    generalsu MDL Senior Member

    Jul 30, 2009
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    So no one has build 9859?
     
  18. s1ave77

    s1ave77 Has left at his own request

    Aug 15, 2012
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    No-one claimed to have so far :g:.
     
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