Checksum error code $06FF with L92 PCM

[Doc]

Ross thanks for the quick reply. I downloaded the fixed file. 7 & 8 both say The version of the file being opened is not supported by this software version. I am running the Oct 28th update.

[Doc]

Got stock file from dealership. little newer OS unrecognized by efilive. Just trying to get this car to start.

[Taz]

Got stock file from dealership. little newer OS unrecognized by efilive. Just trying to get this car to start.

That tune uses OS12665218 ... appears to be from a 2015 Corvette equipped with a 6.2L LT1 engine and a manual transmission.

[Doc]

It is. The dealership down the road from my shop was gracious enough to let me download it. Short of a fix from within the forum I am going to trailer the car to the dealership and have them use tisweb to put it back to stock. The procharger was installed with a Diablo intune. Another shop further edited with HPT over the Diablo tune no problem according to the owner. I entered the picture cautiously first attempting comms then downloading which all went well. I licensed the pcm and attempted to flash the unedited downloaded file which crashedat the very end, with the error in the of this thread. Had a fellow tuner come to the shop with hpt and try to make amends. No joy. Can still download what is in the pcm. Just no start or comms on any scantool.

[GMPX]

Sorry Doc, that is the downside of me always running software development versions that sometimes won't work on public releases, I didn't think of that when I modified the tune.
So the error you got (the checksum) was already explained at the start of the thread. The reason EFILive stops and won't allow the flash to complete is we do a total write validation at the end of the reflash before allowing the flash to complete, if a checksum fails then chances are a block of data may not have been written (which would be very bad). I am pretty sure neither of those other tuners have such checks which is why they are flashing that ECM ok, albeit with the risk that sections of the flash may not have been written correctly.
Essentially what we are doing is what many non GM companies do, Cummins, Bosch etc all employ a similar reflash safety check.

PM me your Email address and I''ll send you the .calz file you need.

Cheers,
Ross

[undergroundak]

Hey, so can I get in on this fun? Here is a Diablo procharger base file that I read and need to complete the tune on an E92 2014 Stingray. I get the $06FF checksum. Car is on the dyno but luckily he is patient...... Let me know if you need anything else or if I need to start a new thread.

Thanks!
NickUnderground stingray-procharger base.ctz