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S10 unrooted but still unauthorised

Discussion in 'Android Help' started by jomcl92, Oct 19, 2020.

  1. jomcl92

    jomcl92 Lurker
    Thread Starter

    I bought an S10 second-hand and when I downloaded Samsung Health it said unauthorised changes had been made.
    Samsung told me it had been rooted.
    I successfully unrooted it, (and checked) but Samsung Health still gives the same error message.
    What can I do? Would appreciate some help as it's my favourite app.

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  2. Hadron

    Hadron Smoke me a kipper...
    VIP Member

    So it had been rooted. That probably means that the Knox "e-fuse" has been tripped, and the device is permanently flagged as having been altered. If that (Samsung) feature is what this Samsung app is checking then I'm afraid you are out of luck.

    It's pretty poor of someone to sell a modified phone without indicating that it had been modified, but I suspect there is nothing you can do about that now.

    How did you unroot it? If you did something other than a complete stock firmware reflash (and relocking of the bootloader, if unlocked) there's a chance that there are traces of the previous modifications still in the ROM and it's those that are being detected. If so it's possible that a reflash will solve this. But if it's the Knox flag that's the problem I'm afraid I don't know an answer.
    ocnbrze, puppykickr and MrJavi like this.
  3. jomcl92

    jomcl92 Lurker
    Thread Starter

    I saw somewhere Knox being mentioned

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  4. jomcl92

    jomcl92 Lurker
    Thread Starter

    I read that the easier ways were not longer any good, so downloaded a few apps to my laptop and did it that way. It took a few hours.
    Sounds like I'm out of luck.
  5. Hadron

    Hadron Smoke me a kipper...
    VIP Member

    What "few apps" did you download? That's not how I'd describe firmware flashing (I'd expect that to take one app and a firmware download, and I've never had it take more than a couple of minutes - though I've never reflashed a Samsung).

    Knox will be mentioned in the software, but what you show doesn't indicate that the flag has been tripped. I think you boot into the bootloader to see the Knox status (Knox version merely tells you which version of Knox the phone uses: all Samsung phones have had Knox installed for many years now).
    ocnbrze and MrJavi like this.
  6. MrJavi

    MrJavi Android Expert

    #6 MrJavi, Oct 19, 2020
    Last edited: Oct 19, 2020
    ocnbrze and Hadron like this.

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