i have the same problem with a w600, one day the phone starts to make weird things... the phone is completely factory, i tried to flash it with the latest firmware (W600_R7CA017_MAIN_NAM_1_RED49) , don't work at all, then i tried to flash the FS file with the (W600_R7CA017_FS_AMERICA_1_RED49) with XS++ ...when flashing the FS it dont finish, because it stop at block 114... and now the phone start up, keep with the blank screen, restaring, and the ("call, menu") words are in the middle of the sreen !, jaja what can i do with ...why it stops at block 114... maybe thats the problem, because it dont finish the process of flashing the FS...