Install SEUS and SEMC USB driver will be installed automatically/

Use A2uploader from here: a2uploader and CID53? - Top Sony Forums
 and these files:

W980_R3DA028_MAIN_GENERIC_MD_RED52
W980_R3DA028_FS_WESTERN-EUROPE_RED52
W980_1210-0268_R3A_Customized_United_Kingdom