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A1990 cant install OS after SSD nand repalced

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    A1990 cant install OS after SSD nand repalced

    Hi all,
    Got A1990 with ssd nand ic shorted.Repalced all the nand ic from same donor board.Restored in apple configurator successfuly and booted to recovery.Its high siera recovery.But when i try to insatll OS from internet recovery it gives error "Recovery server could not be contacted".tried at different places thinking of low internet but still getting same error.Tried date adjustment from terminal also.
    i have heard that we cant install OS from high siera recovery at the moment.Is it true.If yes how to update recovery to latest one.tried to restore several times from AC2 but still getting same high siera reacovry.
    Cant install from external drive as it is security protected.
    Can any guide how to install OS in this mac.

    #2
    Re: A1990 cant install OS after SSD nand repalced

    Try with Cmd + Opt + R to install lastest macos version.

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      #3
      Re: A1990 cant install OS after SSD nand repalced

      tried several times but it still boots to high siera recovery.

      Comment


        #4
        Re: A1990 cant install OS after SSD nand repalced

        Have you tried any other versions of MACOS from a USB stick?

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