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Message: [QUOTE="woodsman, post: 1470036, member: 871"] That's not true at all, can't say who I work for, but we've been working on locking down our production variant ECU's (yes we have physically different production vs development ecu's) so that aside from the pre-encrypted software that comes from a back office computer system, we can't even see or touch what's on our own trucks. If somehow there were a way to edit the parameters or flash a new completely new software onto the controllers, it still requires having access to the original software that Ford wrote and I guarantee that's proprietary as hell. To get those requires someone at Ford illegally leak those documents as well as the software models for the engine and transmission. To further complicate matters, each individual ECU will broadcast via CAN what it's software version and calibration ID is, and it must match the expected version and ID that are programmed onto other controllers or the whole system will lock itself up. When Ford programs either a Mexi file or USA file, they update EVERY ecu with all of this info to make it match. That's why the Mexi flash works. It's encrypted probably and the tuners can't see what it is, but they can flash it because it is essentially a factory tune. [/QUOTE]

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