But i have a question about FS,Customizing FS:
Can i flash R4DB005_FS_CHINA and W810i_CDA102555/101_APAC to my W810i

My W810i info:
CID:49
EROM color: Red
MAIN_CHINA_HN_CID49
Operator: APAC
CDA:102295/7 R2A
Firmware: R4DB005
CXC1250317