Question: I've ran into some problems while using cordova plugin File Transfer. Thats my code:

```
window.requestFileSystem(
    LocalFileSystem.PERSISTENT,
    0,
    function onFileSystemSuccess(fileSystem) {
        fileSystem.root.getFile(
            "dummy.html", {create: true, exclusive: false},
            function gotFileEntry(fileEntry) {
                var sPath = fileEntry.fullPath.replace("dummy.html", "");
                var fileTransfer = new FileTransfer();
                fileEntry.remove();

                fileTransfer.download( 'http://cordova.apache.org/images/cordova_bot.png', sPath + photo.original_name,
                    function (theFile) {
                        alert('success: ' + JSON.stringify(theFile));
                        console.log("download complete: " + theFile.toURI());
                        // showLink(theFile.toURI());
                    },
                    function (error) {
                        alert('error: ' + JSON.stringify(error));
                        console.log("download error source " + error.source);
                        console.log("download error target " + error.target);
                        console.log("upload error code: " + error.code);
                    },
                    true
                );
            })
    },
    function (error) {
        alert('error request: ' + JSON.stringify(error));
    }
);

```

The fileTransfer.download's error callback is being returned with error code 3, http 401.
I already updated the File and FileTransfer plugins, my cordova version is 4.3.0.
Also checked my config.xml for 

```
<access origin="*" />

```

but it's there. 
I tried adding the header Connection: close, but no result.
Tried setting the download's 4th param to its default (false) too - no luck.

Testing on Android tablet.

Anyone anything? Thanks!

Answer: 
Just found a "solution" to my problem.
What I did was to downgrade the file-transfer plugin version from 0.5.0 to 0.4.8.

If someone ever face similar problem, do as below:

1. Delete the existing file-transfer plugin by running 'cordova plugins list' and then 'cordova plugin remove *name\_from\_list*'
2. Go to <https://github.com/apache/cordova-plugin-file-transfer/releases> and download the zip file of 0.4.8 release.
3. Unzip the file in root of your cordova application
4. Run 'cordova plugin add *path\_to\_unzipped\_folder*'

That's it. Seems to be working well, at least the success callback is returned, didn't really test more of it.
If your remote file needs VPN to access, make sure your device is connected to VPN.

In my case I was not connected to VPN on device.