my lenovo bootloader logo missing

I tried to install miui 7 ROM on my a6000 I'm in cm12.1 but accidently I downloaded the 4.4.Android version of miui 7 ROM and after setup it didn't boot up and I installed cm12.1 once again and now the problem is my boot loadr is now showing" mi". Logo. There is any way to change it???????

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