lenovo k50a40 tool dl image fail

lenovo k50a40 tool dl image fail

i flashed with sp tool
with this file:
Lenovo_K3_Note_MTK6752_Android_5.0_20150513
after success flash
when iam trying to on phone
its stop here:lenovo k50a40 tool dl image fail

i have back up file with volcano
iam unable to write to phone

any solution

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