Unlock I9505 only with usb cable and z3x box
 

you need to put phone in this mode:

*#7284#

UART:
*modem
pda

USB:
modem
*pda


Qualcoom setiings:

MTP
MTP ADB
PTP
PTP ADB
RNDIS DM MODEM
RMNET DM MODEM
*DM MODEM ADB


*#9090#

*1 dm dun over hs usb
2 dm dun over hsic
3dmdun rmnet over hsusb
4dm over uart
5dbg msg on
6dbg msg off





*#0808#
*cp
ap

mtp mtp+adb
ptp
ptp+adb
rndis+dm+modem
rmnet+dm+modem
*dm+modem+adb









1. Goto SETTINGS
2. Click ABOUT DEVICE
3. Trap 7 Times on the BUILD NUMBER.

Once done you should get a message stating "You Are Now A Developer"

Once you have seen the message you can then go back to settings and you should have the option "Developer Options", now you can enable USB Debugging.











log on box:
[21:23:38] LaB. Phones: Selected model: I9505
Selected port: COM21 Qualcomm HS-USB Diagnostics 9004
Selected port speed: 115200
Reading phone info...
Build: M9615A-CEFWTAZM-4.0.17062
Reading security... OK
Searching server... OK
NET lock: #7465625*638*39515027#
Sub lock: #7465625*782*00000000#
SP lock: #7465625*77*00000000#
CP lock: #7465625*27*00000000#
For check lock status: *#7465625#
Done with Samsung Tool v.14.4

Unfortunately in 4.2.2 it does not work.
Any new workaround?

downgrade, and made unlock:)

how to downgrade man? i can't find version,only 4.2.2 pls say me were find her?

sir i have same problem when i type *#7284#
did not show urt modem,,

you should downgrde for fisrts release of android version 4.2.2.

I have same problem too, nathing whem *#7284#

DOWNGRADE NEEDED FOR SURE
You need to put phone in this mode:
*#7284#
UART:
*modem
USB:
*pda
Qualcoom setiings:
*DM MODEM ADB
*#9090#
*4dm over uart
*#0808#
ap
*dm+modem+adb
1. Goto SETTINGS
2. Click ABOUT DEVICE
3. Trap 7 Times on the BUILD NUMBER.
Once done you should get a message stating "You Are Now A Developer"
once you have seen the message you can then go back to settings and you should have the option "Developer

Options", now you can enable USB Debugging.
Selected model: I9505
Selected port: COM48 SAMSUNG Mobile USB Serial Port
Selected port speed: 115200
Reading phone info...
Build: M9615A-CEFWTAZM-4.0.17062
Reading security... OK
Calculating... OK
Writing security... OK
Reseting...
Unlock done
Done with Samsung Tool v.14.9
CHECK ALL TIME *#9090# IF dm over uart

i9505 unlock done


Selected model: I9505
Selected port: COM21 SAMSUNG Mobile USB Serial Port
Selected port speed: 115200
Reading phone info...
Build: M9615A-CEFWTAZM-4.0.17062
Done with Samsung Tool v.14.9

Selected model: I9505
Selected port: COM21 SAMSUNG Mobile USB Serial Port
Selected port speed: 115200
Reading phone info...
Build: M9615A-CEFWTAZM-4.0.17062
Reading security... OK
Calculating... OK
Writing security... OK
Reseting...
Unlock done
Done with Samsung Tool v.14.9

just dial *#7284# select modem use uart cable and press unlock

Selected model: I9505
Selected port: COM5 Z3X BOX Serial Port
Selected port speed: 115200
Reading phone info...
Build: M9615A-CEFWTAZM-4.0.17062
Reading security... OK
Calculating... OK
Writing security... OK
Reseting...
Unlock done

1. Phone must be powered on.
2. Type *#0808# and select "DM + MODEM + ADB".
3. Choose correct com-port in Port settings.
4. Connect the phone to PC via micro-USB cable.
5. Press "Unlock" button.



Selected model: I9505
Selected port: COM48 SAMSUNG Mobile USB Serial Port
Selected port speed: 115200
Reading phone info...
Build: M9615A-CEFWTAZM-4.0.17062
Done with Samsung Tool v.14.8

Selected model: I9505
Selected port: COM48 SAMSUNG Mobile USB Serial Port
Selected port speed: 115200
Reading phone info...
Build: M9615A-CEFWTAZM-4.0.17062
Reading security... OK
Calculating... OK
Writing security... OK
Reseting...
Unlock done
Done with Samsung Tool v.14.8

another view.

http://img21.imageshack.us/img21/8020/sub0.jpg

[QUOTE=DUSKnenixs;9421528]you need to put phone in this mode:

...

*#0808#
*cp
ap

mtp mtp+adb
ptp
ptp+adb
rndis+dm+modem
rmnet+dm+modem
*dm+modem+adb

...

In my device if I selece "cp" disapear the next options.
*cp or *ap??

1. Phone must be powered on.
2. Type *#0808# and select "DM + MODEM + ADB".
3. Choose correct com-port in Port settings.
4. Connect the phone to PC via micro-USB cable.
5. Press "Unlock" button.



Selected model: I9505
Selected port: COM48 SAMSUNG Mobile USB Serial Port
Selected port speed: 115200
Reading phone info...
Build: M9615A-CEFWTAZM-4.0.17062
Done with Samsung Tool v.14.8

Selected model: I9505
Selected port: COM48 SAMSUNG Mobile USB Serial Port
Selected port speed: 115200
Reading phone info...
Build: M9615A-CEFWTAZM-4.0.17062
Reading security... OK
Calculating... OK
Writing security... OK
Reseting...
Unlock done
Done with Samsung Tool v.14.9

or by uart though z3x box.

http://img18.imageshack.us/img18/289/zhi9.jpg