VIVO Y21 Y22 [PD1309W] PD1309W_EX_A_3.5.6_vivo_mtk_ALPS.KK1.MP1.V2.46_20141107_mtk6582 Vivo Official Firmware [MTK Scatter Flashtool] [DG]
VIVO Y21 Y22 [PD1309W] PD1309W_EX_B_5.3.11_vivo_mtk_ALPS.KK1.MP1.V2.46_20141107_mtk6582 Vivo Official Firmware [MTK Scatter Flashtool] [DG]
VIVO Y21 Y22 [PD1309W] PD1309W EX A 3.5.6 Vivo Official Firmware [OTA SD_UPDATE] [DG]
VIVO Y21 Y22 [PD1309W] PD1309W EX B 5.3.11 Vivo Official Firmware [OTA SD_UPDATE] [DG]