Download Android Jelly Bean 4.2.1 stock firmware for Lenovo A670T smartphone from here.
Firmware details
Archive: Lenovo_A670T_4.2.1_20160115
Platform: Mediatek MT6589
Archive file size: 484 MB
Model: Lenovo A670T smartphone
Image: Lenovo_A670T_SJJL_ROM_20160115YL & Lenovo_A670T_SJJL_ROM_20160115A
Build number: lcsh89_cmcc_jb2-user 4.2.1 JOP40D 99 release-keys
Caution: Please create non update firmware unless you lot know what you lot are doing, you lot actually desire it or it is absolutely necessary. Firmware updates may occasionally accept bad results, similar bricking your device, temporarily or permanently. The firmware update procedure is done alone at your ain risk. Before attempting to update the firmware, dorsum upwards your data.
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