Unlock Siemens ST55

Unlock mobile phone Siemens ST55
Codes Calculator by Crux v5.0
The process for unlock this mobile is very easy.
Run the software and then select Siemens and ST55.
Write the IMEI of your phone and click the CALCULATE button.
Now you will see in the right of the software the unlock codes for your phone, power on the phone without simcard and write the codes. Now the phone is unlocked.

thank you. but i tried using software to unlock my phone. but in result i lost all my important datas. so i dont need any software suggestions. i heard about unlocking a phone through codes. i came across this site. http://www.mobileunlocksolutions.com/supported-phones/rs1wp7/ have any body heard about this? any suggestions are welcomed.