"unupgradable" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "un",
        "3": "upgradable"
      },
      "expansion": "un- + upgradable",
      "name": "prefix"
    }
  ],
  "etymology_text": "un- + upgradable",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "unupgradable (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with un-",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1999, J. P. Singh, Leapfrogging Development?: The Political Economy of Restructuring",
          "text": "This has led to the employment of a large number of unskilled, low skilled and unupgradable staff, who, over the years, have become more or less permanent and who have aspiration for security […]",
          "type": "quotation"
        }
      ],
      "glosses": [
        "That cannot be upgraded."
      ],
      "id": "en-unupgradable-en-adj-BDQIWmA~",
      "links": [
        [
          "upgrade",
          "upgrade"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "unupgradable"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "un",
        "3": "upgradable"
      },
      "expansion": "un- + upgradable",
      "name": "prefix"
    }
  ],
  "etymology_text": "un- + upgradable",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "unupgradable (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English terms prefixed with un-",
        "English terms with quotations",
        "English uncomparable adjectives"
      ],
      "examples": [
        {
          "ref": "1999, J. P. Singh, Leapfrogging Development?: The Political Economy of Restructuring",
          "text": "This has led to the employment of a large number of unskilled, low skilled and unupgradable staff, who, over the years, have become more or less permanent and who have aspiration for security […]",
          "type": "quotation"
        }
      ],
      "glosses": [
        "That cannot be upgraded."
      ],
      "links": [
        [
          "upgrade",
          "upgrade"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "unupgradable"
}