Quote Originally Posted by dave w View Post
...I'm wondering can an OS from the '0411 be flashed into the '4896 PCM? ...
With EFILive - absolutely no issues in doing this.

With TC - doing this will often corrupt the PCM's unique serial number - making it impossible to license the controller with HPT or EFILive in future.

TC appears to use one flash protocol with the 1999 & 2000 OS, and a different flash protocol with the 2001 & 2002 OS.