you must first install WeatherDatabaseEditor 1.1 Modified.cab

then go to start-settings-home-today and uncheck touchflo3d.

then using resco file explorer, copy 767a192b_manila and 2330fc3c_manila to \windows, overwriting the files in ROM.

then using resco registry editor, apply ffffffff-9415-4077-9476-57bd95c1bf13.reg.

re-enable the touchflo3d home plugin.  you will now have the entire US in your weather database.