@Generale
I agree, everything in AU is a pain in the a$$ to get. You want to live in the country (esp. with our old and mutual friend normie closing down

)
The ROMs are operated at 5V in an Amiga.
The DC-KF500.lha package is the guide on putting flashes into an A500.
When i mean compatible, I guess I mean the same size and package (if the package isnt the same or is hard to get then that could probably be modded as long as it works).