downgrade firmware or access for third party software


I was getting my Sandisk wireless Media drive ready for the holidays. Saw there was a upgrade available (3.0.4) so I updated it. I regret doing this. I have films on my device that the Sandisk app won’t play so I was using a third party app to show thiese video’s via ftp access. It doesn’t work anymore…

Is there a way to downgrade or a different way to access the device for other software.

I also tried, after login with telnet, to create a link in the home folder of the admin user to the folder containing the video’s but unfortunately the admin user has no rights in it’s own folder.

Any help is very appreciated!