I found the steps how to resolve this issue.
pls follow the steps,
1.download mi flash file and install in your system.
2.download latest firmware for your device.
3.keep your mobile in fastboot mode and connect to system,
4. open mi flash and choose the firmware you downloaded, and give the refresh
5. device will connect and it will shown in miflash and select flash and choose clean all
6. after done my device back to normal
i'm happy now its working fine...