Use this 3 files for flashing:


MAIN: K770_R8BC004_MAIN_GENERIC_VI_RED53
FS: K770_R8BC004_FS_S_E_EUROPE_RED53
CUSTPACK: HB1-06_Gen_CDA102568_3_R9A_GENERIC_S_E_EUROPE ,
because S_E_EUROPE have this languages


S_E_EUROPE - English - Croatian - Hungarian - Slovenian - Albanian - Serbian