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*** ERROR: First argument must be a full path to the patch file. Got [  ].
Usage: php.exe -f silentUpgrade.php [upgradeZipFile] [logFile] [pathToSugarInstance] [admin-user]

On Command Prompt Change directory to where silentUpgrade.php resides. Then type path to
php.exe followed by -f silentUpgrade.php and the arguments.

Example:
    [path-to-PHP/]php.exe -f silentUpgrade.php [path-to-upgrade-package/]SugarEnt-Upgrade-5.2.0-to-5.5.0.zip [path-to-log-file/]silentupgrade.log  [path-to-sugar-instance/] admin

Arguments:
    upgradeZipFile                       : Upgrade package file.
    logFile                              : Silent Upgarde log file.
    pathToSugarInstance                  : Sugar Instance instance being upgraded.
    admin-user                           : admin user performing the upgradeFAILURE