Look you can make a full flash ( main, filesystem and custom file ) with R1ED001_RED49 or any other firmware.Only it must be for your phone and the files must match ( R1ED001 all , if you take this ).
You have in download section all this files:
K610_R1ED001_FS_AMERICA_1_RED49
K610_R1ED001_FS_AMERICA_2_RED49
K610_R1ED001_FS_ANZ_RED49
K610_R1ED001_FS_APAC_RED49
K610_R1ED001_FS_BALTIC_RED49
K610_R1ED001_FS_CENT_EUROPE_RED49
K610_R1ED001_FS_CHINA_RED49
K610_R1ED001_FS_C_ASIA_RED49
K610_R1ED001_FS_EUROPE_1_RED49
K610_R1ED001_FS_EUROPE_2_RED49
K610_R1ED001_FS_EUROPE_3_RED49
K610_R1ED001_FS_EUROPE_4_RED49
K610_R1ED001_FS_EUROPE_5_RED49
K610_R1ED001_FS_FRANCE_RED49
K610_R1ED001_FS_HONG_KONG_RED49
K610_R1ED001_FS_MEDITERR_RED49
K610_R1ED001_FS_M_EAST_N_AFR_RED49
K610_R1ED001_FS_ORANGE_GEN_RED49
K610_R1ED001_FS_RUSSIA_RED49
K610_R1ED001_FS_S_ASIA_LEVAN_RED49
K610_R1ED001_FS_S_E_EUROPE_RED49
K610_R1ED001_FS_TAIWAN_RED49
K610_R1ED001_FS_TELEFONICA_RED49
K610_R1ED001_FS_THAI_RED49
K610_R1ED001_FS_T_MOB_INT_A_RED49
K610_R1ED001_FS_T_MOB_INT_B_RED49
K610_R1ED001_FS_VFE_LIVE_2_RED49
K610_R1ED001_FS_VFE_LIVE_3_RED49
K610_R1ED001_MAIN_CHINA_TH_RED49
K610_R1ED001_MAIN_GENERIC_TH_RED49
K610_R1ED001_MAIN_HONG_KONG_TH_RED49
K610_R1ED001_MAIN_ORANGE_TH_RED49
K610_R1ED001_MAIN_TAIWAN_TH_RED49
K610_R1ED001_MAIN_TELEFONICA_TH_RED49
K610_R1ED001_MAIN_VODAFONE_TH_RED49
And many custom files.
Nice day