Download S700_R3M008_FS_CHINESE_RED29

Create a folder by name “ext” or any other name in C:\

copy and paste the FS that you want to extract. Rename the FS as S700. Its better to have a short name for the FS then the normal long name S700_R3M008_FS_CHINESE_RED29.fbn

copy main2raw and sefstool to that folder
Then in Click the Start > Run
type cmd in run and press ok
Now DOS Prompt will open up

type >> cd\

next type >> cd ext

next type >> main2raw.exe S700

main2raw in a few second creates a file with name raw !

now type SEFStool4 raw

wait for a few minutes you will get the extracted firmwares in a folder called _raw