Originally Posted by nikoday
When the charging LED turned green, I plugged it to usb host and restart, but still got the twisted image.
I am quite confused now.
As stated far too many times in far too many posts in this forum, you cannot trust the power LED color on a bricked kindle.
Perhaps your battery is charged enough, but your diags kernel does not match your diags partition. Or perhaps your battery is discharged (which can happen rapidly if left in diags, or while frozen partially booted).