Winstar W5 Flash File MT6572 4.4.2 C5P_72KK_KK_3GW_B15_EMMC_DDR2_32_4_FWVGA_DX_C1_V73C20_Winstar_20190704.162203__KOT49H__yuanda72_cwet_kk
1. Make sure device is powered off. Power off, if need. Wait 20 seconds after 2. Insert USB cable in phone Waiting for device connection...