Why Is Pluto Grey?

[G1INU]

I would say that that might be the problem although not an expert in these thiings. If it was me I would put the Pluto into a Windows PC, format the resulting 'sd disc' the Pluto appears as, then load the Pluto firmware onto that 'disc' and eject it.

It may be that you have some AMD software left in it from testing - or even some new device!!!

Xilinx has some connections with devices used to connect to a bricked Pluto etc. to reprogram it...

Martin G8LCE

Sound advice Martin, thank you.