Download Android Jelly Bean 4.2.2 stock firmware for Lenovo A880 smartphone from here or here. Download another Lenovo firmware from here.
Archive name: lenovo A880-S027-140307-Lang-P_N_DT
Archive file size: 410 MB
Firmware: Android Jelly Bean 4.2.2 stock firmware
Model: Lenovo A880 smartphone
Platform: Mediatek MT6582
Project: lcsh82_wet_jb5
Config_version: V1.1.1