you need flash main file(W580_R8BA024_MAIN_CHINA_LA_RED52) ,fs file(W580_R8BA024_FS_CHINA_RED52) first,then flash custom file(HB1-06_Gen_CDA102568_104_R8A_GENERIC_HONG_KONG) if you use far. this firmware can support english, chinese simplified and traditional
reference:Using FAR+SEFP with a DB2012 DB2020 phone (Guide) - Top Sony Forums

XS++ 3.1 Guide-Flashing, Customizing, Recovering XS++ 3.1 Guide-Flashing, Customizing, Recovering - Top Sony Forums

XS++ 2.x flashing guide
XS++ 2.x Guide - Top Sony Forums