This is the IYONIX (codename Tungsten) stable release ROM image. It can be programmed into your IYONIX pc using the supplied programmer, !ROM530.
You will also need the HardDisc4 image from Miscellaneous downloads for this release of RISC OS.
PLEASE NOTE: Repeated re-programming of the Flash ROM will eventually cause it to fail. When this happens, your Iyonix will not boot, and a hardware repair will be required. If you wish to avoid this happening, you should consider using the softload version of this ROM image instead.