WMPRO, WMMINI FW >= 1.1015 WMMEGA FW >= 2.0

Backup the contents of non-volatile RAM (NVRAM) to a file on the SD Card

$filename: Full path and file name to store data

int: number of bytes written or 0 if unsuccessful

<?
  $res=nvram_backup("/mybackup.dat");
  if ($res > 0) {
    print("NVRAM Backup File Size: ".$res);
  } else print("Backup failed.");
?>

md5_restore() - Restore NVRAM contents from a file</html>