But don't you have another shooting mode, I have an unbranded W810i and I have two shooting modes, high quality in witch I can shoot as long as my memory gets full and "For picture message" in witch I can shoot 30 sec. there is no difference between "For Picture msg" and "For Multimedia msg". cuz anyway that is limited to the message size. Eventually try to flash your phone again. Did you, by any chance, changed your cam drivers too?