Speed Triple Spedo Won't Work

I have a 2009 Speed Triple 1050 that I had to change the wiring harness on and now the speedometer isn't working, I saw that the ECU may need to be flashed to get it to work again, but we have tried several computers with several programs and they just will not communicate to the ECU, diagnostics will work but any tune will not communicate, I took it to a very good mechanic and he can't figure it out and the local Triumph dealer won't touch my bike since it is over 10 years old, any help would be appreciated.