What is the problem with my NAND?

Discussion in 'Xbox 360 Development' started by AS347, Jun 23, 2016.

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  1. AS347

    AS347 Rapidly Rising Member

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    Everytime i try to downgrade my Jasper below 7776.1, it always errors out. I've seen someone with an 1888 Jasper XDK. I have no clue why my Jasper Test Kit fails to downgrade below 7776.1, even though i KNOW it is possible
     
    AS347, Jun 23, 2016
    #1
  2. Stipo360

    Stipo360 Dead Rising & XDKs

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    Likely because that jasper was downgraded to 1888 before the 09 patch? Maybe consoles that have reached 21256 blow a fuse to not go any lower?
     
    Stipo360, Jun 23, 2016
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  3. AS347

    AS347 Rapidly Rising Member

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    Nah, i don't think so. I took a dump from 20353, AFTER i upgraded to 21256.18 and no fuselines changed.
     
    AS347, Jun 23, 2016
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  4. AS347

    AS347 Rapidly Rising Member

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    What i mean is that i downgraded to 20353 after upgrading to a 21256 recovery.
     
    AS347, Jun 23, 2016
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  5. AS347

    AS347 Rapidly Rising Member

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    Checked fuseline 2 and it reads as no fuses are burned on fuseline 02
     
    AS347, Jun 23, 2016
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  6. XboxSurgeon

    XboxSurgeon Site Supporter Since 2013

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    [​IMG]
     
    XboxSurgeon, Jun 23, 2016
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  7. AS347

    AS347 Rapidly Rising Member

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    lol XD. but seriously, i've tried downgrading from 7776.1 and 21173.1. No success
     
    AS347, Jun 23, 2016
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  8. XboxSurgeon

    XboxSurgeon Site Supporter Since 2013

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    Do you have anything between 7776 and 1888? Maybe it's too drastic of a drop....
     
    XboxSurgeon, Jun 23, 2016
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  9. AS347

    AS347 Rapidly Rising Member

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    Yes. But when i try to go down to 7645.1, I get 0x0000000c. And my recoveries originate from the 12-24-14 leak
     
    AS347, Jun 23, 2016
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  10. TriMesh

    TriMesh Site Supporter 2013-2016

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    Could be that you have a unit with big block flash - they will refuse to downgrade to a system version that doesn't have support for it. Attempting to bypass the checks results in the update apparently completing OK, but the unit then being unable to boot.
     
    TriMesh, Jun 23, 2016
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  11. AS347

    AS347 Rapidly Rising Member

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    OHHHHHHHHH FINALLLY I FOUND IT OUT. Yes, unfortunately i do have a big block.
     
    AS347, Jun 23, 2016
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  12. Stipo360

    Stipo360 Dead Rising & XDKs

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    Would 256mb be considered big block or is it only 512?
     
    Stipo360, Jun 23, 2016
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  13. AS347

    AS347 Rapidly Rising Member

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    256 and 512 = Big Block
    anything else is small block
     
    AS347, Jun 23, 2016
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  14. Stipo360

    Stipo360 Dead Rising & XDKs

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    Alright so that means XNA's will have the same issue as you, damn.
     
    Stipo360, Jun 23, 2016
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  15. AS347

    AS347 Rapidly Rising Member

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    Someone downgraded an XNA Jasper to 1888
     
    AS347, Jun 23, 2016
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  16. TriMesh

    TriMesh Site Supporter 2013-2016

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    Maybe they built a custom image - the guy I was talking to was pretty emphatic about old recoveries not working on big block flash units, and I tend to believe him since he was working for MS.
     
    TriMesh, Jun 23, 2016
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  17. Lehvak

    Lehvak Bürgermeister

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    How? XNA's are BB.
    XNA's are all Jaspers, so saying "XNA Jasper" is kinda redundant.
     
    Lehvak, Jun 23, 2016
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  18. AS347

    AS347 Rapidly Rising Member

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    There have been reports of Falcon XNA kits, most likely very early expo kits.
     
    AS347, Jun 23, 2016
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  19. Lehvak

    Lehvak Bürgermeister

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    [​IMG]
    Nope all are Jaspers fam
     
    Lehvak, Jun 23, 2016
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  20. XboxSurgeon

    XboxSurgeon Site Supporter Since 2013

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    There were some Falcon boards which were found in the wild. It seems odd I know, but I've heard the same several times over and seen pics somewhere. Albeit I've never seen one in person as all of mine have always been BB Jaspers.
     
    XboxSurgeon, Jun 23, 2016
    #20
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