Bc2000 (for the BCF2000 & BCR2000)

Hi to all.

I just have started to create music with cubase and bcr2000.
After a lot of reading i have understand some things but still i 
have some questions.

I have download .syx files and i have store them successful on the 
bcr, the problem is that i want to make some changes on that present.
I'm also using the b-controller program it helps me to load the 
presents on the hardware, but i can't understand how to do changes.

So,

Can anybody tell me how I can manual config the bcr on cubase?
And also if someone have ever use the learn mode on the bcr and how? 
(because i try to config it through the learn mode but i couldn't)

Thanx