No logo after updating to MIUI8

I tried to update to the lastest MIUI8 (Dev ROM) via the recovery. It seemed it went as it should but when I restarted it, without wiping/cleaning anything, it didn't boot up. No MI logo, power+vol up, power+vol down doesn't do anything. The screen doesn't show anything at all. No LED while charging either.
Anything can I try doing now?


Thanks

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