First update to CID52
then..

W850_R1KG001_MAIN_GENERIC_CY_RED52
W850_R1KG001_FS_CENT_EUROPE_RED52
HB1-06_Gen_CDA102568_2_R5A_GENERIC_CENT_EUROPE


depends which language you want.... if you need other language... check out this site Top Sony - Languages Description for the right language

all files can be found in the download sectoin