The answer is no. FW6 RC1 can only install images to HD, USB or CF with the 7020. Musicbob said somewhere that the flash layout of 7020 made it too difficult.
It's a pity because the smartcopy feature of FW is great. It takes all the current settings into the new image. So if you have an image working perfectly with settings and channels you can install another image and not have to edit any configuration.
I used dreamup to change my flash image. There must be a way to take the files for configuration, satellites and channels into the flash image manually. Anyone know which files in /etc ?