download setool2lite from download area and connect it, when it ask to upgrade Cid to 52, click yes and use the following 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