Download Android KitKat 4.4 stock firmware for Leagoo Lead 5 smartphone from here or from here. Download another Leagoo firmware from here.
Archive： Leagoo Lead 5 MTK6582 V0.9.2_S0113 179626 20150305
Model： Leagoo Lead 5 smartphone
Image file size: 459 MB
Platform: Mediatek MT6582
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.