QSI Product history QSI has kept a series number of the hardware, so I will organize by that.The firmware that can be used on hardware varies.Firmware idsThere is the quantum 1 (Q1) (uses version 6 firmware) this uses a big square chip in a socketVersion 7 is Quantum or Quantum revolutionVersion 8 is TitanVersion 9 is Titan with ETQ1a - titan came out about 2012, more memory, faster processor Q3 (ho?) Titan technology Hardware IDs7000 - FX-U HO7002 - FX-SD (small diesel? ho?)7021 - FX-DO (O scale)7022 - Titan-G (large scale)4000 - q2 revolution / magnum (large scale)