What are you trying to achieve? Someone might have different answers is you tell us what your goal is.So google finds me lots of old thread where people discuss swapping the TCU from the F360, or flashing the F360 software onto the existing TCU. There is usually a lot of arguing about how the 4200 and GS are different, someone usually talks about how they should just buy a F360 instead of being poor, then something about production numbers, how the alignment of Jupiter and the conjunction with Venus affect the gear box internals and eventually the original question never gets answered.
It has been a good decade since people started asking these questions - surely someone has an answer by now!
Can the TCU be swapped from an F360 to a GS/4200, do you even need to go that far and can you just flash the software?
Considering the TCU for the GS/4200 and F360 are super easy to find more than a decade after these cars hit the shelf, if someone with the technical know how to tell me if its even possible, I might just give it a crack.