Since I updated to 3.3 EU I have recently been having lots of trouble running my back-ups. SSBB which used to work fine on my verbatim DVD+R discs will no longer load and neither will Star wars unleashed nor wario shake it. They will all start up and some will show the intro movies but after that I will just get "unable to read disc, please refer to techincal manual" or similar message. Has the new update caused problems ? If so is it possible to downgrade to a previous firmware ? My discs are all unscratched burnt on Verbatim discs and I am running the D2CKey.