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Q1: How do I enable e-RIC terminal output (since v02.03.05)

A1: Attach a debug cable to the serial connector on the bracket and press
    ESC in the terminal window during the first 1-2 seconds of the e-RIC
    boot process. You should get a prompt where you should execute the
    following commands:

      setenv serial_debug 1
      saveenv
      reset

    This must be repeated if you flash a new bootcode.
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