W850 Configuration Error

[highshape]

flash the custom_pack for APAC or choose the finalize options in XS++ and select APAC region from the dropdown list and then reflash again with the MAIN and FS with the options enabled. you can also use this file with setool2lite. Downloads - w850custpack - HB1-06_Gen_CDA102568_101_R5A_GENERIC_APAC - Top Sony

I need your help link me to the firmware and main to download for flash.
I scared I download wrong file to flash.

Thanks