VK2000 Band Selection

[lightsped]

I have a VK2000 that was purchased in Asia. I see that this phone has the option of switching between frequencies (900/1800 or 850/1900). However, my phone is missing this menu option.

Is there a code to unlock this band selection menu?

Thanks!

[ATM]

you can see codes for vk2000 http://www.atm-box.com in "free utilities" page.