you have use the wrong custpack, try this
K800i_CDA102511_180_R1A_Telefonica_O2_Czech_republ ic, if it doesn't work, use these files :
K810_R8BF003_MAIN_GENERIC_SM_RED53.mbn
K800_R8BF003_FS_S_ASIA_LEVAN_RED53.fbn
HB1-06_Gen_CDA102568_110_R8A_GENERIC_S_ASIA_LEVAN