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    Rolling Back Firmware

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by Mang0, Jun 1, 2013.

  1. Mang0

    Mang0 Notebook Enthusiast

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    Is it possible to downgrade from DXM05B0Q back to DXM04B0Q on the 840 Pro? I've tried to do it with Magician but it wouldn't let me. Getting really low write speeds with the new fw.
     
    Mang0, Jun 1, 2013
    #1
  2. JOSEA

    JOSEA NONE

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    What were you speeds before vrs after the firmware change? I did a bit of searching but could not find anyway to rollback SSD firmware. If it still under warranty I would look into RMA. Have you double checked your BIOS setting for ACHI? Do you notice any issues when you look at the SMART data ? There is also a long thread here: AnandTech Forums
     
    JOSEA, Jun 1, 2013
    #2
  3. Mang0

    Mang0 Notebook Enthusiast

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    Before FW update:
    518 MB/sec read
    493 MB/sec writes
    114029 iops random read 64threaded
    78927 iops random write 64threaded
    After:
    518 MB/sec read
    134 MB/sec write
    67283 iops random read 64threaded
    34827 iops random write 64threaded

    Its under warranty and I've gotten an RMA twice for dead drives, its in AHCI with trim enabled, and smart data is normal.

    That thread is for the firmware I updated from.
     
    Mang0, Jun 1, 2013
    #3
  4. Marksman30k

    Marksman30k Notebook Deity

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    I updated too but mine was fine. Are you sure the SSD wan't running GC while you were doing the tests? this can drastically reduce write performance. Have you ran the tests again and are the results reproducible?
     
    Marksman30k, Jun 1, 2013
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  5. Mang0

    Mang0 Notebook Enthusiast

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    The controller does not do GC until 60 min of idle time, the results are reproducible.
     
    Mang0, Jun 2, 2013
    #5