for whose who has got problems to use the program because it's only USB or has unlock without backup (like me) and has still bluetooth activated car solve the imei and bd address problem with that (should be works with usb cable also) :
1) get the phone recognized by windows and activate modem serial port interface
bluetooth perifs-> properties -> services -> check the 2 boxs
3) start -> programs -> accesories -> communication -> hyperterminal ->
set a name and modem port (should be found in step 1)
'call' (yellow phone)
4) type "AT" (without quotes) should see "OK"
5) type ATZ (activate echo)
6) AT%IDDE to unlock
7) AT%IMEI=X,X,X,X, ....
(15 chars) replace X by IMEI code or what you want
8) AT%BTAD=X,X,x,x,x,x ...
(12 chars from 0x0 ->0xF) same for bluetooth address, warning : the digits are in little endian (inversed)
9) switch off and on and the bluetooth should work again without asking for BD address

this method has worked for a KU380 only by bluetooth without install third party program to backup or repair and should works for other phones