Well if this helps someone, I did make my own unlocking cable back in 2007 when the Dejan's BB5 unlocker was out.
As the unlocker uses the COM port, it was easier to use a serial data transfer cable used for older mobiles (or simply an FBUS cable for that matter), along with the USB DKU-5 cable. Found it simpler as I didn't want to have to damage my USB cable and still use it for usual data transfer...

Just connect the RX and TX pins of the serial cable to the Data+ and Data- pins of the DKU-5 and you've got your BB5 unlocking cable. Of course, the config file(bb5_unlocker.cfg) should contain the COM port you are using for this operation - like this if you are using COM 1: "COM1:" without quotes.

Basically, most of the FBUS cables around, use a MAX232A (RS-232 Level Converter)and and its pins 9 & 10 can be connected to a female USB connector which in turn can be safely connected to the DKU-5, without having to damage it.
Hope this helps,
Ivak

Will this work on an E71x?

@Albert™
No, it won't.

Can E63 be unlocked using this software?

@Anonymous
Unfortunately, you can't.

My friend using the Nokia 6630 which is locked to vodafone.She unlocked her mobile using the unlocking code.she got the unlocking service from http://www.unlocking4u.com/.

Hello, thanks for those nice infos, but I would really like to know what unlocking/flashing boxes for usb phones are ? , thanks ;)

@Anonymous
Here, take a look at the unlock boxes for sale - link.

thank you carrotmadman ;)

Hello is it possible to convert Nokia 3500cb to 3500c ?

@Anonymous
This software is used for unlocking, not flashing firmware. :)

hi, can i unlock my nokia n96 t mobile, if cannot what alternative do i have...pls hlep

@Anonymous
No, you can't unlock the N96.
Try searching around for an unlock solution for the N96.

Hi,
I'm having a some problem here, but if you can help me out with this, would be great. I can't unlock my Nokia N80-1 because i only have the CA-53 cable.
IMEI: 352764016862455.
Code: 0549462
Type: RM-92
FCC ID: QFXRM-92
IC: 661Z-RM92
If someone can help, i'm very greatful! Thank's a lot!!!!!!
sergioalbertopedro@hotmail.com

hey there mr. carrotmadman how many pins does the DKU-5 have? do you think DKU-5 with less that 13 pins would work with my n6630?

Tnx

@Anonymous
If you look at this pic (link), the DKU-5 has more than 13 pins.

hi... mine is a nokia 6280... do i really need the DKU-5/CA-42 cable to unlock? where to get those cable? phone shop?

would this program unlock 6280 v03.81 RM-78?

@Anonymous & @mike
Yes, you need the DKU-5 cable to unlock.