Download Android ICS 4.0.4 Stock Firmware for Lenovo A630 smartphone from here or here. Download Android ICS 4.0.4 Stock Firmware for Lenovo A630T smartphone from here. Download another Lenovo firmware from here.
Archive name: Lenovo_A630_4.0.4_20160314
Archive file size: 264 MB
Model: Lenovo A630 smartphone
Build number: lcsh77_cu_ics2-user 4.0.4 IMM76D eng.wanjie.1368184282 release-keys
Caution: Please do not update firmware unless you know what you are doing, you really want it or it is absolutely necessary. Firmware updates may occasionally have bad results, like bricking your device, temporarily or permanently. The firmware update process is done entirely at your own risk. Before attempting to update the firmware, back up your data.