Download Android KitKat stock Firmware for iNew V3 Plus smartphone from here or here. Download previous firmware from here.
Archive name: V3-Plus_cxq_v3a_inew_V06_CWM_recovery
Archive file size: 792 MB
Project: MTDTtest
Platform: MT6592
Config_version: V1.1.2
Platform: MT6592
Config_version: V1.1.2