These settings will make your LG KU250 work as a high speed modem. In windows, install the PC suite and set the profiles to the following:
Country → Other
Network Provider → Other
Call Type → 3G-PS
Profile → MyProfile
APN → smartbro
User Name →
(meaning: don't put anything on the username/password space).
(I am changing the APN to smartbro from internet. I think smart changed this sometime last year).