I would strongly advise you not to install Nav4all on your BB8130.
This program was created for GSM 8100, and it will as in my case disable the gps chip . After installation my google maps and bb maps stopped working. I have tried everything from hard reset to wiping my bb clean and reinstalling OS from scratch, with no avail.
I had to change my bb for a new one . This did not happen only to me.
As far as amaze goes , it is painfully slow.