You need Setool only if you want to "patch" your phone.
Use this firmware:
W580_R8BE001_MAIN_GENERIC_LA_RED52
W580_R8BE001_FS_S_ASIA_LEVAN_RED52 and the customization
HB1-06_Gen_CDA102568_110_R8A_GENERIC_S_ASIA_LEVAN
by following this tutorial :
XS++ 3.1 Guide-Flashing, Customizing, Recovering - Top Sony Forums
You can make 3.Flashing and 4.Customizing in the same run.