A1708 Weird boot behaviour

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  • dome1
    New Member
    • May 2023
    • 3
    • Belgiรซ
    #1

    A1708 Weird boot behaviour

    Hello!

    This is my first post here.

    Recently i repaired my costumers a1708, 820-00875. Where U3200 was in short, it got replaced, device started working again without problems. Fastforward 4 months and it has problems with booting.

    Sometimes it shows apple logo, is stuck, then shows a crash screen
    Sometimes it just boots normally

    It wont allow me boot externaly, Tried 3 diffrent osx, Bigsur, Monterey, Ventura.

    From what i gather i assume bios is corrupted, but what programmer do i use? where do i begin? Any help is welcome

    @Edit

    Already tried diffrent internal ssd, the smc/pram reset.
    Last edited by dome1; 06-29-2023, 08:53 AM.
    Tags: None
    • Adogabriel100
      knowledge seeke
      • Aug 2021
      • 36
      • peru
      #2
      Re: A1708 Weird boot behaviour

      Did u already try Command + R? re-install system via online? secure boot on this macbook is activated i suppose, that's why dont allow u to boot an external HDD?

      if you are pressing Command + R and does not get you in the recovery menu try this: plug in an external HDD with diferent mac os installers and try again Command + R.

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