12592618 cax for 4l80e TCC unlock tables

[Supercharged111]

ddnspider .... I opened up an existing file that I had with the same OS as yours. I knew that this older version would not touch your newer CTZ file. Unfortunately, I think that the newer version of EFILive will NOT save to an older version. One option is to use something like PCMHammer, or LSDroid to read your file as a binary. Both the newer and older versions of EFILive will read in *.bin files.

That would solve another issue I thought of: firmware. New and old versions of software probably won't talk to the same version of firmware. . . right?

[turbo_bu]

That would solve another issue I thought of: firmware. New and old versions of software probably won't talk to the same version of firmware. . . right?

Yes, I think this becomes the issue. You can use the older 7.5 all you want, but it probably won't connect with your V2 that has been updated with the newer version of firmware which matches your newer version of EFILive. I am pretty sure that you can not downgrade your firmware either on the V2 to match this older version of EFILive. The proverbial catch 22.

I was able to open my tune file which matches your OS and make some changes using your CAX file. It saved ok, and I was able to re-open it and the changes were there. I did not flash it into a PCM.