Default [Q] SGP512 - 32GB Wifi, USA customization number or build.prop file please

Hello, Im looking for SGP512 - 32GB Wifi, USA customization number or build.prop file please
I have downloaded this ftf for 511 http://forum.xda-developers.com/show....php?t=2765250, changed build.prop file to 512 but PC Companion shows my tablet as 521 for some reason
Each time i was trying to repair my tablet to SGP512 USA version via SUS it shows me no update avalible