While DMS people waste FPGA gates protecting their "Intelectual Property" Matrix Team tries to make it's device more stable (this is about the software stuff inside the actel chip, not the flashable part)
By what I know the FPGA (the Actel) cannot be reprogrammed without a serious flaw of security being made possible. So all modchip makers opt for a partial solution on which sopftware updates are possible ( bios patching updates, new features, etc... ) and the FPGA is protected aganist tampering.
Matrix clones are made mimic-ing the behavior of the actel chip while a raw copy of the eeprom is used. Since the cloners FPGA doesn't know how to handle the data if the structures are changed (I.E.: you press start at the configuration menu and the flash gets written to) the chip "dies".
The only reason MI is easy to clone is because it's flash is not encrypted and the actel chip behavior can be traced with a logic analyzer.
SCPH-10000_GH-001 SCPH-15000_GH-003 SCPH-18000_GH-008 SCPH-30001_GH-005 SCPH-30000_GH-016(V4) SCPH-30001_GH-010(V4)
2xSCPH-10190, 2xSCPH-10350, 2xSCPH-10280
"**** j0 hackers!"
-Sjeep (As seen on TOXIC OS ELF...)