I have a ecm with os 09381344 and am wanting to convert to the new OS5 but am having a hard time following the tutorials and others posts. What i have gathered is that i need to convert to another os before changing over to OS5. After looking through my custom os i cant seem to find the intermediate os. Am i over looking it or can i not change my 00 a4 to a m6 tune that will allow me to use OS5?
Thanks,
..RJ..