how to insatl mgcamd with image black hole

You need a tarball specific to the Blackhole image then

Transfer the tar.gz emu file to the tmp folder of your image

Now on your remote press green then yellow and manual install select the file and click ok.

To start the emu press the blue button and then on the top option use the <> buttons to select it then ok to start.

Yes the tgz format files will install fine.