hi, you will need these files:

MAIN: Downloads - R2AE033_RED29 - K500_R2AE033_MAIN_EU_6_A_RED29 - Top Sony Forums

FS:Downloads - R2AE033_RED29 - K500_R2AE033_FS_EMEA_8_RED29 - Top Sony Forums

cust pack: Downloads - k500custpack - Top Sony Forums (download the one that matches your country)

and here is a tutorail i wrote for FAR manager: FAR + JDflasher - Top Sony Forums

note: if you decide to use XS++ or setool lite you won't need the cust pack