How to reflash the last firmware when the previous failed

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Hello,

I would like to know if it's possible to reflash the last firmware when the NAS542 is unreachable.

It is possible that the last flash was completed incorrectly although I am used to doing this.

Thank in advance for your help

Kind regards

Accepted Solution

  • mich0111
    mich0111 Posts: 3
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    edited May 10 Answer ✓
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    Hi,

    I have done a rescuedisk.

    I have used the NAS540 rescuedisk with the firmware of the NAS542.

    It works perfectly.

    My NAS is reachable again.

    Thanks for your help.

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  • Mijzelf
    Mijzelf Posts: 2,638  Guru Member
    First Anniversary 10 Comments Friend Collector First Answer
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    Depends. When the kernel still boots (which doesn't necessarily gives a reachable NAS) you can use a RescueStick. I don't have one for the 542, but the stick for the 540 should also work, when you exchange the .bin file by one from a 542, and put it's md5 sum in the appropriate file.

    But if the kernel still boots, a factory reset might also do the trick. Push the reset button, and keep it pushed until the box has beeped three times. (+/- 20 seconds). If it beeps, the kernel is active.

    When the kernel doesn't boot, it becomes more complicated. You'll need serial access to revive the box.

  • mich0111
    mich0111 Posts: 3
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    Thanks a lot.

    If I do this or if I do a factory reset, will I lose all my data?

  • Mijzelf
    Mijzelf Posts: 2,638  Guru Member
    First Anniversary 10 Comments Friend Collector First Answer
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    Neither will destroy your data. A factory reset deletes the configuration, which means you'll have to reapply users and shares. (The directories are still there, but you'll have to 'promote' them to share).

    A rescue stick only flashes firmware, and leaves everything else as-is.

  • mich0111
    mich0111 Posts: 3
    Friend Collector First Comment
    edited May 10 Answer ✓
    Options

    Hi,

    I have done a rescuedisk.

    I have used the NAS540 rescuedisk with the firmware of the NAS542.

    It works perfectly.

    My NAS is reachable again.

    Thanks for your help.

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