Download and Install Stock ROM On Yes Altitude M631Y [Official Firmware]: The stock firmware file name is Yes_Altitude_M631Y_MSM8916_07052016_5.1.1_QFIL.zip. The firmware file is around 693 MB in size. It is shared to cloud mail file-sharing website so we are thankful to them as well as to the uploader. The stock firmware is based on Android 5.1 Lollipop. […]
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