How to repair Xiaomi 4 if it's not starting?

i have unlocked bootleader of redmi4 and after that i ahve entered to fastboot and commanded like this "oem lock" after this commaand my mobile is not starting and logo of miui is appearing at once and disapperaing what can i do for this problem?plz give suggestion to repair my mobile?




Hi there. Have you tried flashing a stable rom to your phone? Here's the link to download it: click here



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