how to unlock samsung gt-i9505 4.2.2

http://forum.gsmhosting.com/vbb/f716/how-unlock-samsung-gt-i9505-4-2-2-a-1752942/

Step :1

Factory reset


Step :2

Need root

Step :3

Manual via UART cable C3300K
------------------------------
Select com port box in software
Press *#7284# and select "Modem"
(Only show one option interface "UART")
*default setting: "PDA"
Press *#9090# and select "4 - DM over UART"
*default setting: "DM/DUN over HS-USB"

Step :4

1. Phone must be powered on.
2. Enable "USB debugging" ("Settings"-"Developer options" for Android 4.0+).
3. Choose correct com-port in Port settings.
4. Connect the phone to PC via micro-USB cable.
5. Press "Unlock" button.
6. When you have "Now connect phone to UART cable ... Checking phone at COM" massage, connect phone to micro-uart cable.