Stock rom for Vivo Y1s (PD2014F) DOWNLOAD: PD2014F_EX_A_1.70.30_vivo_mtk_alps-release-q0-pre6.1_mt6771.rar PD2014F_EX_A_1.70.28_vivo_mtk_alps-release-q0-pre6.1_mt6771.rar PD2014F_EX_A_1.70.16_vivo_mtk_alps-release-q0-pre6.1_mt6771.rar PD2014F_EX_A_1.70.13_vivo_mtk_alps-release-q0-pre6.1_mt6771.rar PD2014F_EX_A_1.70.6_vivo_mtk_alps-release-q0-pre6.1_mt6771.rar PD2014F_EX_A_1.10.1_vivo_mtk_alps-release-q0-pre6.1_mt6771.rar OTA: PD2014F_EX_A_1.70.6_OTA_UPDATE.zip ...