How To Install Stock ROM on Selecline S6S55IN3G (Firmware/Unbrick/Unroot)
Guide To Install Official Stock ROM On Selecline S6S55IN3G (Back to stock, Unbrick, Unroot and Fix Bootloop): The available firmware file name is Selecline_S6S55IN3G_MT6580_20170506_6.0.zip and it is