HP41 NovRAM - storing ROM

[burkhard]

If you were to buy a NoV-64 from Diego, it comes with a "flashing tool" board that plugs into your PC via USB. You attach your NoV-64 module onto this board and flash it with whatever HP41 modules you like via some also-included software.

The modules that you flash onto it are already ROM files online. You don't need to download physical hardware modules and transfer them to PC somehow as you ask about. Some nice folks have already done all this. Just pick which ROM files (i.e. modules) you want on your NoV-64 and flash it with those images. At that point, the NoV-64 is set up as you like it and those modules will be retained (power is not needed). They are on there permanently, unless you want to change them for some other configuration :-)