chắc máy lỗi phần cứng rồi. flash bin lỗi log như sau: " ANDROID EMMC File: MT657x/83/89 The File Information: TINNO77_ICS2_PCB01_HSPA_MT6577_S00.MAUI_11AMD_W12_22_SP_V5_P2.BIN_FLNPF38F5060M0Y3DG Waiting for USB Port... Set MediaTek PreLoader USB VCOM Port (COM10) Please Hold "ON" to connect with the phone...USB Connected to Phone. CPU: MT6577(6575) SW:E201 Ver: CB00 Downloading Boot8 ... EMMC Size: 0xE7000000 INT/EXT RAM Size: 0x0+0x0 Writing(Nand/eMMC)... Writing MBR Writing EBR1 Writing __NODL_NVRAM Write error code: 0000 "