I unzipped the AllAppUpdate.bin file with 7zip. I got an "AllAppUpdate" folder, inside it from the "apps" folder then from the "190000000_com.syu.settings" folder I found the "190000000_com_syu.syu.settings.apk" fileIt's inside the AllAppUpdate.bin from your backup.
My canbus menu has also gone blank like yours (also a Navifly 116 model). Everything still works just the option to change vehicle for the Canbus is no longer there like in the image above.
I'll try reverting this afternoon to see if it fixes it
At this point I don't know what to do. That is, @mariodantas @surfer63 @john83 what should I do to put back my original "com.syu.settings" file?
@john83
Did you succeed? How did you do that