No Signal on 3 TVs

I've had this model for 3 years and it has worked fine. Recently I decided to sell it so flashed it and upgraded the O/S. I plugged it into my Onkyo receiver and outputted to my Samsung 4K TV. It worked fine. Then when I brought it over to my friends house, we had no signal. We plugged the Minix to the BD/DVD HDMI port. Then ran an HDMI to his TV. No signal. I ran it through other ports on his receiver and it still doesnt work. No signal. I even plugged the Minix directly to the TV via HDMI and still no signal. So I took it back home and tried it on my TV and my wifes TV and no signal.

Anyone know why? What are my options?
 
Hi, I have a similar issue, this model has worked correctly on same monitor since we bought it. Suddenly there is no signal anymore. We checked basic causes like connections, monitor, etc and everything is correct. would firmware update help?
 
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