I'm wondering the same thing and likely have the answer. This thread is really unspecific as to what the "conversion" is. Basically it just disables CDMA and enables standard UTMS 3G. It does not enable the 1700MHz AWS HSPA band used by T-Mobile in refarmed areas, and by Wind on their entire network. With Wind being an only 3G AWS network, you NEED the 1700MHz AWS HSPA band in order it for it to work, unlike T-Mobile where in non-refarmed areas without 3G it just drops down to EDGE.