WP 3.5 media uploader API set selected item

I know how to use the new media uploader in WP 3.5 and integrate it with plugins and themes but I have a problem, say the user selected the image and the frame closed I want when he open it again the image user selected before being selected in the gallery or highlighted.

the codex doesn’t have any api doc about it

$button.on('click', function(e){
    // prevent default behavior
    e.preventDefault();
    if ( typeof file_frame != 'undefined' ) {
        file_frame.close();
    }

    // create and open new file frame
    file_frame = wp.media({
        //Title of media manager frame
        title: 'Select an Image',
        library: {
            type: 'image'
        },
        button: {
            //Button text
            text: 'Use Image'
        },
        //Do not allow multiple files, if you want multiple, set true
        multiple: false,
    });

    //callback for selected image
    file_frame.on('select', function() {
        var selected = [];
        if ( is_multiple ) {
            // multiple images selected
            var selection = file_frame.state().get('selection');
            selection.map(function(file) {
                selected.push(file.toJSON());
            });
        } else {
            // single image
            selected.push(file_frame.state().get('selection').first().toJSON());
        }

        // loop through selected images
        for (var i in selected) {
            console.log(selected[i]);
        }

    });

    // open file frame
    file_frame.open();
});

can anyone help