UNLOCK Huawei 303

Unlock Huawei 303 new modem

First find your modem IMEI (this shows how to find it)
close all the modem softwares and try this way
http://www.youtube.com/watch?v=f9F01WXkfec

go to site and enter your IMEI and press calculate
http://www.modemunlock.com/huawei-code-calculator/
or
http://oscarmini.com/2013/12/how-to-unlock-all-huawei-modems-e303-inclusive-for-free.html

you will get

IMEI :
New Algo NCK
Old Algo
Flash Code

remove your modem and change the sim to another subscriber (if you have Dialog sim and put a Mobitel sim) and connect modem to computer again then it will ask for Unlock code

enter  New Algo NCK code and press ok

HAVE FUN....