Sorry mate.I'm new to this.Since my zappiti icon already there in favorites after i'm upgrade to this firmware.But now i cant add any new application to my favorites.
After try and error i found a solution that work for me (After i'm delete the Zappiti icon in favorites first).
First go to setup>miscellenaous> select 'clear system storage'.*note that your custom skin will be deleted,but you can reinstalled it.
Then go to your _Zappiti folder.In my case,i'm using external HDD for movie storage. Source>USB>BDRIP(here where all my movie folders locate including '_Zappiti' folder.
Select _Zappiti folder and add to favorites.It's work!