Start by going to root, then "lsusb -v > lsusb.txt" and scan that for the word "Research" or maybe "RIM" to find the full entry for your device, then post that block here. For instance, the 8320 looks like this:
Bus 003 Device 003: ID 0fca:0004 Research In Motion, Ltd.
bDeviceClass 0 (Defined at Interface level)
idVendor 0x0fca Research In Motion, Ltd.
iManufacturer 1 Research In Motion
iProduct 5 RIM Composite Device
iSerial 3 XXXXPRIVATEXXXX
(lots and lots more, snipped for brevity)
NOTE: this is with berry_charge active and not btool/bcharge, but you should get something that looks somewhat similar, probably a lot shorter.
What you're looking for in that block above from your 'lsusb -v' is the idProduct
stuff, that's what identifies your device as a BlackBerry to the computer (for any of the tools).