see this
http://forum.ppcgeeks.com/showthread.php?t=16886
Here's how to get your MSL Unlock Code to edit the settings found under "Dialer Codes" (##code#)#) mentioned earlier.
0. Download GetSPC
http://rapidshare.com/files/86837140/GetSPC.zip
Instructions:
1. Unzip and copy the extracted GetSPC folder (with all 3 files) to the storage card on your device.
2. Write down the ESN (Hex) number found behind the battery.
3. Power up and run the 'GetSPC(PPC 2003)' executable on your device.
4. In the 'Input' field, enter the ESN number you wrote down but be sure to use ALL CAPITOLS for the alpha values. (Ex: 123ABCD4, not 123abcd4)
5. Hit the 'Go' button. The value in the 'Output' field will be your "Unlock Code".
INSTALL FROM MEMORY CARD********************************************** ************************************************** ************************************************** **********************
To do this there are 3 steps:
First take the .exe file and open it with winrar (its a program, google it). There will be a file 3.16.nbh extract that and rename it to TITAIMG.nbh
Next format a microSD card with FAT 32 (required most are fat16 default) and copy the file TITAIMG.nbh to the root of the sd card(the main page, not inside ANY folders) with a card reader.
Finally place sdcard in device and reset into bootloader mode (HOLD POWER, CAMERA AND HIT RESET AT SAME TIME). The flash will proceed from the SD card and it should work fine. Enjoy!