Probably definitly bricked now.

Well, facing another problem.

I wanted to perform factory reset, so i reflashed stock recovery.
Flash was "probably" fine, no error in Windows.
I reboot device.

Then i power off to reboot to recovery with power & Vol up

And now, i'm stuck on a black screen, nothing appears, no recovery.
I try to switch off, long press power, working, but every time i try to power on now, black screen.

Help...