hex2binDownload

function hex2binDownload(hex, fileName) {
  const binary = hex.match(/[A-F0-9]{2}/g).map((value) => parseInt(value, 16));
  const byteArray = new Uint8Array(binary);
  let a = window.document.createElement('a');

  a.href = window.URL.createObjectURL(new Blob([byteArray], { type: 'application/octet-stream' }));
  a.download = fileName;
  document.body.appendChild(a)
  a.click();
  document.body.removeChild(a)
}