Hey, just here to learn and see if I am able to save/download my current ECU file from my truck. I had it tuned today and the factory tune/file was overwritten in a manner the dealership cannot detect. I am curious if anyone may be able to help me save a copy of the file that is currently loaded in my truck to a USB thumb drive. I'd also like to see if I can obtain the stock file that was overwritten. Please let me know if you think you can help. I am also very familiar with flashing hardware such as computers, set-top boxes and other things, I've just never messed with flashing an auto ECU. Thanks in advance.

Anyone? I'd sure like to have the ability to remove and re-apply this tune at my discretion because the person who did the tune lives 800 miles away. Thanks in advance.

Hi mate,
No info about your truck, yout ECU, nothing.How can you get help?Post here some info and maybe will receive info you need.

My apologies, it's a 2017 Toyota Tundra SR5 with the 5.7L V8. I'd like to find a way to obtain the factory flash in case I ever need to revert back to stock. The current tune has removed the speed limiter and torque management among other tweaks. I'd like to download a copy from the truck, and save it to USB and find the factory file and save it as well so I can switch between the 2 files. I also would need a little advice as to what hardware and software would be needed. I do have a j2534 2.0 firmware cable and Toyota Techstream if needed. Thanks a bunch.

Is that enough information or am I asking too much? Not even sure where to start, but I figured I should be able to backup the tune that was installed over my factory file, and find the factory file somewhere online, yes?

I guess ktag could do the job

So this cannot be done with hardware I already have with any type of free software? I told you guys I know nothing about ecu files.

No cant be done with simpel USB thumb devices.
Need BDM or something so Ktag or other Tools like this.