Somebody with a 1010 needs to help here. I don't know how the editing interface is set up.

>>>Could you tell me how to assign patches on the keyboard.

I don't understand the question. You mean how to create a layer or a split keyboard?

In general:

Check out your manual on how to create layers and splits in performance mode.

Check out the performance USER 13 RAVE SPLIT. It's split right at middle C.

Once you have that in your performance screen, you assign instruments (patches) to a certain part in the PART screen (there are other ways, but that's easiest for now). Just choose whichever patches you want.

You assign those parts to a certain keyboard range (=keys on the keyboard) in the K.RANGE edit screen. In the K.RANGE screen, you'll see a graphic representation of the keyboard that you can manipulate to assign key range to the part/patch.

>>> Also, can you assign EFX without the SounDiver Software? (Only with the JV-1010 and keyboard)

Again, somebody with a 1010 will have to answer this one. I have an XP60 and have no clue about the 1010's editing interface. Sorry.