Samsung I827D SUCCESFULLY Unlocked
 

1) Select model S6500
2) Tick unlock
3) Connect phone powered on with C3300K UART cable (via com port).

Here operation log:

Count supported models - 319
Reading Phone Info... OK
Model: SGH-I827D
Country Code: TLS
Cal Date: ªU
Factory SW: I827DTLLE4
Unique Number: CSJ08970027C45F
Memory Phone: ªU
Phone S/N: R21C617QV8
Build: 76XXU-USMSKRLYM-109806
IMEI: 3530520
PDA/CSC Version: I827DTLLE4/I827DOYBLE4
Phone version: I827DTLLE4
Phone HW: REV1.0
Cal Date: 2012.06.08
Read Security... OK
Bypass MSL... OK
Unlocking ... OK
Done with Samsung Tool ver 12.7

Then you are out of luck, anyways you can try to:

1) Use 00000000 as unlock code
2) Reset phone and then try procedure again

Its supported now

micro-uart cable:
1. Phone must be powered on.
2. Connect the phone to UART port.
3. Choose correct COM port in port settings.
4. Press "Unlock" button.
micro-USB cable:
1. Phone must be powered on.
2. Type *#7284# and choise phone usb.
3. Type *#197328640#, select: Common - Diag Config - USB diag.
4. Reboot phone.
5. Connect USB cable, install drivers.
6. Select diagnostic port in port settings.
7. Press "Unlock" button.

Selected model: I827
Selected port: COM336 SAMSUNG Android USB Diagnostic Serial Port (WDM)
Selected port speed: 115200
Reading phone info...
Model: SGH-I827D
Country code: ªU
Cal date: ªU
Factory SW: I827DTLLE4
Unique number: CSJ08965XXXXXXX
Memory phone: ªU
PDA/CSC version: I827DTLLE4/I827DOYBLE4
Phone version: I827DTLLE4
Phone HW: REV1.0
Cal date: 2012.09.13
Reading IMEI... OK
IMEI: 35305205XXXXXXX
Phone S/N: R21C9XXXX
Build: 76XXU-USMSKRLYM-109806
Reading security... OK
Bypass MSL... OK
Unlocking... OK
Reseting... OK
Unlock done
Done with Samsung Tool v.13.8

read codes no work only direct unlock ok:

Selected model: I827
Selected port: COM218 SAMSUNG Android USB Diagnostic Serial Port (WDM)
Selected port speed: 115200
Reading phone info...
Model: SGH-I827D
Country code: ªU
Cal date: ªU
Factory SW: I827DTLLE4
Unique number: CSJ087152074E8F
Memory phone: ªU
PDA/CSC version: I827DTLLE4/I827DOYBLE4
Phone version: I827DTLLE4
Phone HW: REV1.0
Cal date: 2012.09.15
Reading IMEI... OK
IMEI: 353052050496649
Phone S/N: R21C93FF9B
Build: 76XXU-USMSKRLYM-109806
Reading security... OK
Bypass MSL... OK
Freeze/Master code: í&¦ôSìWB
NET lock: §#šé
Sub lock: vSÏ77ǾÃ
SP lock: vSÏ77ǾÃ
CP lock: vSÏ77ǾÃ
For check lock status: *#7465625#
Done with Samsung Tool v.14.1

Selected model: I827
Selected port: COM218 SAMSUNG Android USB Diagnostic Serial Port (WDM)
Selected port speed: 115200
Reading phone info...
Model: SGH-I827D
Country code: ªU
Cal date: ªU
Factory SW: I827DTLLE4
Unique number: CSJ087152074E8F
Memory phone: ªU
PDA/CSC version: I827DTLLE4/I827DOYBLE4
Phone version: I827DTLLE4
Phone HW: REV1.0
Cal date: 2012.09.15
Reading IMEI... OK
Done with Samsung Tool v.14.1