I am successfully flashing ROMs on SImplemining but my way is a bit more involved (but it sure is prettier also) --

I installed a desktop to run next to the Terminal environment.  I installed ATIflash and Teamviewer on all the rigs and can log in remotely and stop the mining by switching to the Terminal View and then log back into the Desktop.  

This is using the Rx Version -  I had to update the drivers on it for 2 reasons:
1- I didn't want 2 versions for different cards
2- Because neither the R or the Rx version worked well with Pro Duo's.

In order to do that easily,  I changed the original Password for Miner then installed a Gnome Desktop, then installed amdpro-gpu drivers.  Since I had already installed a desktop I figured I might as well install something to make it more useful hence the TeamViewer and AtiFlash