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If you only want to tune the ecm you'll need to read just the ecm. Don't read the ecm and tcm.

The ZF8 TCM requires additional credits as outlined on our supported vehicle page.

Advertising on our forum is frowned upon. Because of this I will be closing this thread. Please keep it friendly and focused on tuning assistance. TIA!

You can read more about the T87A tcm service here https://www.hptuners.com/product/gm-t87a-tcm-services/

Yup. ECM doesn't need to be sent off, tcm does.

Yes, most late model GM/Dodge ecm's need an unlock, perfectly normal.

You need to register as a customer here https://www.hptuners.com/my-account/

From there you can register the device assuming the original owner has released the device from their device page.

If you followed my instructions you would've only read the ecm and would not have to license anything other than the ecm. To me it sounds like you didn't follow my instructions.

I took a look at your ticket.

You read out the ZF8 TCM which costs 4 credit in order to license. If you do not wish to tune the TCM, please re-read your PCM only. You can do this by opening VCM...

https://forum.hptuners.com/showthread.php?5228-MPVI1-USB-driver-installation

windows 11 and MPVI1 are NOT compatible

What operating system are you running on your new computer?

Yes.

You can sign up for our vehicle beta testing program here https://www.hptuners.com/vehicle-beta-testing-program/

because when you start a write entire you can ONLY do a write entire to attempt recovery. One more reason not to do write entire.

YOu likely had no reason to do write entire.

I corrected my post.

Try flashing via bench harness.

You should NOT be doing write entire unless you are changing to a different operating system or being told by someone at hptuners to do so. It is an advanced...

https://forum.hptuners.com/showthread.php?19023-Erase-VCM-Failed-Error-8A&p=139897#post139897

Typically a battery or wiring issue with the vehicle. This guy had a dakota digital air ride system...

replied to your ticket and I'll take it from there.

Hard to tell as you did not provide us with the SN of the device in question. With that said its currently in our work in queue and you should have a response by tomorrow(likely requesting the SN of...

Because that is the only solution you are going to find in this case.

Needs to be handled via email, not our forum.

Make sure you have the MPVI1 drivers installed, they can be found here https://www.hptuners.com/downloads/

If that still doesn't work we recommend opening a support ticket.

It looks like one of our tier 3 techs is attempting to work with you and has sent you a call tag for the device so there are no out of pocket costs to you to send us the the device for inspection and...

We have an extremely low failure rate. How old is your device? Personally I still have my MPVI1(had the usb port on it replaced about 10 years ago but still works fine). Electronics,...

open editor, click read vehicle
then click read
then save the file you read
then open the stock file
then select write vehicle
then click write

Pretty straight forward. www.hptuners.com/help...