First ..backup nyo gamit ang mtkdroid tools pati imei backup nyo rin.
2nd download kayo ng official firmware like row110,108 etc.tingnan nyo yung dinownload nyo na firmware kung may flashtool kung meron proceed to 3rd kung wla download kayo ng sp flash tool.
3rd install nyo ang driver ng lenovo pagkatapos run nyo ang sp flash tool at click nyo ang scatter at e click nyo ang scatter ng dinownload nyo.
4th remove the battery,sim and sd card
5th plug in nyo yung cp nyo at e click nyo ang firmware update then wait and finish .....feedback lang pag working