Download Android Jelly Bean 4.2.2 stock firmware for Karbonn A7 Star smartphone from here or here. Download another Karbonn firmware from here.
Archive: Karbonn A7 Star 4.2.2
Model: Karbonn A7 Star smartphone
Project: hct72_wet_jb3
Config_version: V1.1.1
Baseband: MT6572_S00_MOLY_WR8_W1319_MD_TG_MP_V1_P3_1_tg_n
Archive: Karbonn A7 Star 4.2.2
Model: Karbonn A7 Star smartphone
Image file size: 271 MB
Platform: Mediatek MT6572Project: hct72_wet_jb3
Config_version: V1.1.1
Baseband: MT6572_S00_MOLY_WR8_W1319_MD_TG_MP_V1_P3_1_tg_n