RS232 Cable for X2 Hyundai receiver

Connect RS232 cable between PC & receiver then open STBTool press on Borwse, 
open the file to be downloaded 
(main software for Model X is: XAU_153P_20040805 ) then press Connect & Start.
The RS232 cable configuration is:
Pin 2.....to.....Pin 3
Pin 3.....to.....Pin 2
Pin 5.....to.....Pin 5