6.6.1 Version Numbers
The designer reserve the right to do changes to existing designs and harnesses as he keeps on
developing software and hardware. The market change all the time as new ideas submerges. The
TCU has a version number system so that the user knows which drawing and also which tuning
profile goes with which TCU firmware. There is also a document which explains about the
hardware and software changes made between different versions.
TCU Version will indicate the product namely TCU and which model is connected. Model is
Standard, Intermediate or Advance.
Firmware Release is the PC Software, Electronic hardware, Firmware or Protocol version and
software release information. This is very important as it must coincide with the PC software. It is
also written with a permanent marker on the enclosure but this my rub off during installation.
2.20.1.A In the sample means: PC Software Ver. 2, Hardware number 20 (SPITRONICS TCU),
Protocol Ver.1, Firmware Ver. A.
The PC software also has a version number in the name part of
the file or on the Top information bar. Keep older versions for old TCU versions. TCU firmware can
be upgraded by an agent to accommodate changes in the latest PC software. Version 2.20.1.0
TCU must be programmed with Ver. 2.20.1.0 PC software. The alphabetic number if any will
indicate later version changes in the TCU or PC but does not change the protocol of Ver.2.20.1
software. This may differ from software to TCU but does not matter.
Program is a number given to each TCU firmware program to identify them apart. Behind the
number is a short explanation of the type of program. On some programs there is a last letter
indicating a B for Buttons or P for Profile Switch. See the file on CD for a list of these program
numbers available.
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