For debranding you need this 3 files:

MAIN: K810_R8BA024_MAIN_GENERIC_SM_RED52
FS: K810_R8BA024_FS_MEDITERR_RED52 and
CUSTPACK: HB1-06_Gen_CDA102568_4_R8A_GENERIC_MEDITERR


And for download access read this How to get access to Download Area? - Top Sony Forums