install apk external intent()

Hi guys

I have a problem to install an apk previously downloaded from a server, then start to finish downloading the installation with intent () but nothing happens ...... not start the installation. Help me with this please.

show the code

module.exports = function(win) {
    //consultamos un json por actualizaciones
    var version = Ti.Network.createHTTPClient();
    version.onload = function() {
        var version = "1.3";
        var data = JSON.parse(this.responseText);
        //alert(data.version);
            if(version !== '1.2') {
 
            var descarga = Ti.UI.createButton({
                title:'Actualizar',
                top:'25dp',
                //left:'9%',
                backgroundColor:'#555',
                width:'90%',
                height:'15%',
                color:'#FFF',
                font:{fontFamily:'Cicle_Semi', fontSize:'35%'},
                borderRadius:5
            });
 
            win.add(descarga);
 
            descarga.addEventListener('click',function() {
                    var ind=Titanium.UI.createProgressBar({
                        width:'200dp',
                        //height:'100dp',
                        min:0,
                        max:1,
                        value:0,
                        top:'100dp',
                        message:'Descargando Actualizaciones..',
                        font:{fontSize:12, fontWeight:'bold'},
                        color:'#333',
                        zIndex:9
                    });
 
                win.add(ind);
                ind.show();
                var xhr = Ti.Network.createHTTPClient();
                xhr.onload = function() {
                    var f = Ti.Filesystem.getFile(Ti.Filesystem.externalStorageDirectory,'bestado.apk');
                    f.write(this.responseData);
                    Ti.App.fireEvent('downloaded', {filepath:f.nativePath});
 
                };
                xhr.ondatastream = function(e) {
                    ind.value = e.progress ;
                    Ti.API.info('ONSENDSTREAM - PROGRESS: ' + e.progress);
                };
                timeout: 10000;
                xhr.open('GET',Ti.App.Properties.getString("URL")+'bestado.apk');
                xhr.send();
 
 
                Ti.App.addEventListener('downloaded', function(e) {
                    Ti.API.info(e.filepath);
                    ind.hide();
 
                    var intent = Ti.Android.createIntent({
                        action: Ti.Android.ACTION_VIEW,
                        data: e.filepath,
                        type: "application/vnd.android.package-archive",
                        packageName: "com.android.packageinstaller",
                        flag: "0x10000000"
                    });
                    Ti.Android.currentActivity.startActivity(intent);
 
                });
 
            });
 
        }else {
            //alert('tienes que actualizar tu sistema');
        }
    };
    version.open('GET',Ti.App.Properties.getString("URL")+'json/update.php');
    version.send();
 
};

First I make a validation if some file exists on the server with a new version of the apk, then download and create a trigger to initiate the intent (), but does nothing. Any idea what happened?

Android sdk 3.4