I9505 v4.4.2 unlocking done...[Reference]
unit :Samsung I9505 version 4.4.2

lock : Smart

solution :unlock by octopus box
procedure:
1. Disconnect USB cable from phone.
2. Go to Menu->Settings->More->About Device.
3.Tap on "Builds numbers" 7 times to enable developer options.
4. Go to Menu->Settings->More->Developer options.
5. Turn on "USB Debugging" option.
6. Go to dial window.
7. Enter "*#0808#" number.
8. Select "DM+Modem+ADB".
9. Close window.
10. Go to dial window.
11. Enter "*#9090#" number.
12. Set "Diag config" to "USB" value.
13. Restart phone.
*open octopus software
*select correct model and comport
*select firmware For_Unlock_and_IMEI_Repair_GT-I9505
*kailangan na download mode ang unit(volume down,home,power ON)
*click write firmware wait lang matapos

*ready for unlocking
*read codes or direct unlock
read codes

direct unlock

Done

unit :Samsung I9505 version 4.4.2

lock : Smart

solution :unlock by octopus box
procedure:
1. Disconnect USB cable from phone.
2. Go to Menu->Settings->More->About Device.
3.Tap on "Builds numbers" 7 times to enable developer options.
4. Go to Menu->Settings->More->Developer options.
5. Turn on "USB Debugging" option.
6. Go to dial window.
7. Enter "*#0808#" number.
8. Select "DM+Modem+ADB".
9. Close window.
10. Go to dial window.
11. Enter "*#9090#" number.
12. Set "Diag config" to "USB" value.
13. Restart phone.
*open octopus software
*select correct model and comport
*select firmware For_Unlock_and_IMEI_Repair_GT-I9505
*kailangan na download mode ang unit(volume down,home,power ON)
*click write firmware wait lang matapos

*ready for unlocking
*read codes or direct unlock
read codes

direct unlock

Done
