Help Diagnose problem with my machine

  • Hi All, I have acquired an LD002H, can someone help me diagnose the problem I have.
    Currently on V4.3.16, If I try upgrade4 firmware, I get "invalid file format".
    The clean vat function is missing.
    Calibrate shows a band across the screen and not the rectangle test.

    Thanks in advance to anyone who can assist.

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