Update image in magento

<?php
$proxy = new SoapClient('http://rudi.rudi.dev/berbatik/api/soap/?wsdl');
echo "Login...\n";
$sessionId = $proxy->login('sysadmin', 'admin123');
echo "Loading...\n";
$newImage = array(
    'file' => array(
        'name' => 'ImageTemp',
        'content' => base64_encode(file_get_contents('ImageTemp.jpg')),
        'mime'    => 'image/jpeg'
    ),
    'label'    => 'Cool Image Through Soap',
    'position' => 2,
    'types'    => array('small_image'),
    'exclude'  => 0
);

$imageFilename = $proxy->call($sessionId, 'product_media.create', array('K01', $newImage));


var_dump($imageFilename);

// Updated image file
var_dump($proxy->call($sessionId, 'product_media.list', 'K01'));

?>