You forget custompack ! Use these files:
1. K850_R1FA035_MAIN_CHINA_SO_RED52 (Downloads > Firmware > K850 > R1FA035_RED52)
2. K850_R1FA035_FS_APAC-ANZ_RED52 (Downloads > Firmware > K850 > R1FA035_RED52)
3. K850i_1201-0102_R11A_GENERIC_APAC-ANZ (Downloads > Custom Files > k850custpack)
Then make this:
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