hi! I have bought some m3 machines, i want to downgrade the firmware with sd card, most of them works fine after changing the firmware, but some of them which has e big black Heath Sink on their control board doesn't work after machine resets.
and now whenever i plug machine in to power all lights(network port, Alarm and Active lights) keeps on and not getting off or flicking.
i have tried both Zynq and H3 image but it still not working.
before changing the firmware they works fine.
![Embarrassed](https://bitcointalk.org/Smileys/default/embarrassed.gif)
any idea?
is there any other image file other than zyng or h3?
thanks guy <3