flash it with xs and use these files
MAIN : K800_R8BF003_MAIN_GENERIC_WI_RED52
FS : K800_R8BF003_FS_EUROPE_2_RED52
custpack : HB1-06_Gen_CDA102568_11_R8A_GENERIC_EUROPE_2
for setool2lite, read here : Flash your phone and How to apply or remove patch using SETool 2 Lite - Top Sony Forums