Been through that, you may not be able to tell by looking at it.
Randy
There is a rather simple way to find out.
An option I did not document in Espritmon is the ability to download the ECU ROM contents to file. This is done by using the mode2 to request the contents of 64 bytes that follow a start address that is provided. When you press the 'n' key in Espritmon while it is getting data, Espritmon will request a series of 64 bytes of data (starting at $8000) and write the result as a binary to file in the Espritmon working directory (name: espritrom.bin, size 32768 bytes). Note that this will take several minutes !! There are several people on the list that will be able to tell you which version of the ROM you have.
If you know how to use a hexadecimal viewer, check the contents of the file at address $1400. If it reads 'Changes to this binary file are copywrite Andy Whittaker, ' etc. You have one of the ROMS that contain his updates tables.
Good luck,
Erik