@nickmaleao 7z is archive , click Extract here.

FS is *.fbn
Main is *.mbn
EUROPE_1 (English - Portuguese - Spanish - French )

You need :
I. K810_R6BC002_FS_EUROPE_1_RED52

II. On Customization choose:




III. K810_R6BC002_MAIN_GENERIC_SM_RED52