Ban dong ban phim -> thao sim - > gan pin vao - > khoi dong may - > nhan cac phim va xoay jog dial theo thu tu nhu sauqui uoc: ky tu ^ la xoay len; v la xoay xuong) ^*vv*v* sau do chon muc 3 (Service functions). May se tu dong khoi phuc cai dat goc va reset lock code. chuc ban thanh cong! code mac dinh cua P910i la 0000
