Hello again.
Every so often I've been noodling the interwebs when I'm board and time has passed for this elusive program "smf" dropped by to tell us about but then promptly disappeared without sharing additional info on it. I was kinda bummed too because I seem to remember being able to tie them to a group which put all of this information together on the 573 at the following site (maybe did mame dev for it too).
https://psx-spx.consoledev.net/konamisystem573/
Yesterday I stumbled across this cool looking program which resembles what was offered as the solution for reading the flash roms without removing them PLUS a number of other really cool abilities too! I clipped the first part of their readme file and pasted to the end of this message.
Check it out here!!!
https://github.com/spicyjpeg/573in1
I'm sure I can remove and read my roms if I shell out a hundred bucks or so to buy the needed GQ-4x4 adapters, but since it is an undumped version and one of my roms seems to be failing as it will throw an error every so often while booting I was hopping to avoid going that route with the thought of a program like the 573in1 out there.
I have a spare 573 that I used for the two player version until I found the three, so I'll likely give this a go on that one before attempting to use it on my three player board.
It may take me a couple of months to get to this as I'm in the middle of a divorce and unfortunatly will now have to pairdown most of my sizeable collection to only a handful of peices in the near future but I'll report back with my results should someone here not be me to the punch.
Shout out of thanks to the "spicyjpeg" person (and anyone else) behind this project!!!
Peace.

573in1 is a full-featured homebrew maintenance and troubleshooting tool, gameinstaller and BIOS ROM replacement for arcade games based on Konami's System 573PCB, such as earlier versions of Dance Dance Revolution and other Bemani rhythmgames from the same era. It currently allows for:
- dumping, erasing and writing binary images to the onboard flash memory, PCMCIAflash cards and RTC RAM;
- dumping security cartridge EEPROMs and editing the serial number stored inthem in order to reinstall a game on a different system;
- repurposing security cartridges for use with any game that uses the samecartridge type;
- browsing the CD-ROM, or any connected IDE hard drive or CF card, and launchingSystem 573 and PS1 executables.
A secondary - but no less important - purpose of this project is to serve as atestbed for System 573 reverse engineering and documentation efforts, byproviding an extensive ready-to-go user interface and hardware abstractionlibrary with (hopefully) easily readable code. The project may potentially beexpanded to support other similar PS1-based arcade PCBs in the future.