Hi
Review this: Flash your phone and How to apply or remove patch using SETool 2 Lite and try with another GENERIC data pack (FS, MAIN and CDA), for example: FS: Downloads - R1KG001_RED52 - W850_R1KG001_FS_S_ASIA_LEVAN_RED52 - Top Sony , MAIN: Downloads - R1KG001_RED52 - W850_R1KG001_MAIN_GENERIC_CY_RED52 - Top Sony and CDA: Downloads - w850custpack - HB1-06_Gen_CDA102568_110_R5A_GENERIC_S_ASIA_LEVAN - Top Sony.

Greetings