Download Android KitKat 4.4.3 stock firmware for Lenovo A3900 smartphone from here. Download or in addition to then other Lenovo firmware from here.
Firmware details
Archive： Lenovo_A3900_4.4.3_20160927
Image: Lenovo_A3900_SJJL_ROM_20160927B
Model: Lenovo A3900 smartphone
Image file size: 444 MB
Platform: Mediatek MT6752
Build number: pxa1L88H2-user 4.4.3 KTU84M A3900_S134_150814 release-keys
Platform: Mediatek MT6752
Build number: pxa1L88H2-user 4.4.3 KTU84M A3900_S134_150814 release-keys
Caution: Please produce 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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