1.
For All Phone Except K750i/D750i/W800i:
- T28 Unlock/Service Cable (Serial or USB)
or
- DSS-25 synchrostation

For K750i/D750i/W800i and All Phone:
- 2in1 Cruiser USB Service Cable (This Cable can also work as T28 service cable.)

For K750i/D750i Debrand:
- K750i DCU-60 USB cable (came with the phone)

2. One credit for each operation

Unlock will take less than 1 minute.
Flashing will take approximately 40 minutes for serial cable and 7 Minutes for USB cable.

Always fully charge the battery before performing any operations.

** You can always download the software and test your cable first.
Choose "Flash" -> "Read CID". This operation is free.