[schimi2k]

Ok, thanks, it was my doubt, then i´ll delete the entire folder and copy the new one. I´ll do a backup with openelec config before.

Sorry to blow your bubble... It could work when you just copy the new madnox over the old one... BUT
1. jarvis store skin settings in addon_data folder and no longer in guisettings
2. our new update will change the whole mainmenu and widget system
3. To avoid strange problems i can just give everybody one important advise... Start complete! From stock when we rls rc-1... Will save you in the end some time and stress
( i mean kodi jarvis final, all actual needed addons and madnox)
But everybody can do what they want