i guys don't worry it doesnt matter
i have solution for bsnl teracom datacard Lw272 & Lw273 model
with that u can use all gsm sim (Airtel vodafone Tatadocomo Aircel videocon uninor Reliance gsm ...etc)in ur data card with out any registry edit or something else ,
call : 9944665344
mail :
[email protected]