Validate Checksum Failed. You will be unable to save or flash this file.

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04-10-2014
Bill@HPTuners

Validate Checksum Failed. You will be unable to save or flash this file.

Alot of people have asked me about this since the 2.25 build so I'm reposting this here, its very important to read this.

This isn't a bug in the software, and is perfectly normal.

When you read your PCM and then try to open the file with VCM Editor and receive this message here's what you should do:

1. Email the .hpt file as well as a VCM Suite infolog while connected to the vehicle in question to us at support at hptuners.com
2. we will review the file for integrety and if the checksums are correct & not disabled, missing or corrupt we will send you an update as soon as possible to fix this issue.
3. the fix will be included in all future shipped software and updates.

Fixing these issues are #1 when it comes to support so you can be assured that you have our full attention when we receive one of these emails.

This error is most common on Ford, Dodge & GM Alloytech(Bosch) pcm's & usually means its a new operating system we have yet to come across & we need to map the calibration for your use which can take several days or longer depending on the complexity of the operating system.

Thanks for your understanding and patience (we know what it is like to get something new only to have to wait another day to use it).

:cheers:
Support
05-13-2014
Bill@HPTuners

TTT as I've been getting a half dozen people a day that ask me this same question :)
02-11-2015
BoostedYards86

can you define infolog? I'm getting a checksum error on an 08 Mustang GT currently. However it is not the factory file nor do I have access to it.
02-11-2015
ElecTech

Quote:

Originally Posted by BoostedYards86

can you define infolog? I'm getting a checksum error on an 08 Mustang GT currently. However it is not the factory file nor do I have access to it.

The help file will walk you through it.
02-11-2015
BoostedYards86

thank you
04-10-2015
Knightwolf

I sent one of these in earlier today.. 14 Mustang GT copperhead fail to read or something.. checksum error submit to Hp Support.. Just hoping you got it and can get a fix soon.. I want to get tuning this thing :P
Thanks guys
06-13-2015
stangslayer

Quote:

Originally Posted by ElecTech

The help file will walk you through it.

Where is this help file located? I searched checksum" in the help section of the editor with no results.

Thanks
06-18-2015
Bill@HPTuners

Quote:

Originally Posted by stangslayer

Where is this help file located? I searched checksum" in the help section of the editor with no results.

Thanks

http://www.hptuners.com/help/introdu...mersupport.htm

or open the editor and click Help-Help

or open the scanner and click Help-Help

or open the editor and click F1

or open the scanner and click F1

redundancy check anyone?
07-07-2015
tokymon

2 Attachment(s)

2009 f250 superduty 5.4l

just tried to read a 2009 f250 suoerduty 5.4l gas got failed checksum errorAttachment 51856 Attachment 51857

already sent to support already
07-09-2015
tokymon

Just used latest beta to flash truck no have no start. Have flashed multiple times. Disconnected battery. Can still flash but can not conection with scanner
09-02-2016
Almightyaaron

Do you know approx. how long it take to get a file back? For a 2014 Mustang Thanks
12-17-2018
Speedmaster747

just submitted a ticket #157820
12-31-2022
WesDuenkel

2 Attachment(s)

Just tried to read a 2018 Mustang GT using a MPVI2. Got the "Validate checksum failed. Controller TC-298" error. I understand the procedure, but it seems odd to me that I'd be getting this error on a four year old vehicle...? Just curious if there's something else I'm missing. Files attached.

Attachment 127106
Attachment 127107
12-31-2022
Seishuku

Quote:

Originally Posted by WesDuenkel

Just tried to read a 2018 Mustang GT using a MPVI2. Got the "Validate checksum failed. Controller TC-298" error. I understand the procedure, but it seems odd to me that I'd be getting this error on a four year old vehicle...? Just curious if there's something else I'm missing. Files attached.

5AJIDGO.H32 sounds like a Ford Performance tune ID, if so, you'll have to flash back to stock, then read with HP Tuners.
12-31-2022
WesDuenkel

Quote:

Originally Posted by Seishuku

5AJIDGO.H32 sounds like a Ford Performance tune ID, if so, you'll have to flash back to stock, then read with HP Tuners.

Interesting. Just bought this car, so I don't have the stock tune. Is the only way to "flash back to stock" is by going to my local Ford dealer and have them install the factory tune? Is there a way I can flash back to stock on my own using the MPVI2 if I don't have the factory tune file? I have *a* 2018 GT factory tune file, but not sure if I can use the MPVI2 to install this *other* stock tune or if I have to go to the dealer.
12-31-2022
Seishuku

Quote:

Originally Posted by WesDuenkel

Interesting. Just bought this car, so I don't have the stock tune. Is the only way to "flash back to stock" is by going to my local Ford dealer and have them install the factory tune? Is there a way I can flash back to stock on my own using the MPVI2 if I don't have the factory tune file? I have *a* 2018 GT factory tune file, but not sure if I can use the MPVI2 to install this *other* stock tune or if I have to go to the dealer.

Dealer can do it for sure, I'm not sure if HP Tuners can flash over an unknown tune.
I'm not sure I would risk trying, unless someone from HP can chime in on it.
01-04-2023
WesDuenkel

Yup, HPtuners understandably doesn't support this operating system. Dealer tool failed to flash back to stock as well. Said there was some kind of "high level block" that is preventing us from flashing it back to stock. Shop is using factory Ford VCM2 and IDS software. We're really stumped here. Any ideas on how to proceed?
01-06-2023
veeefour

Quote:

Originally Posted by WesDuenkel

Interesting. Just bought this car, so I don't have the stock tune. Is the only way to "flash back to stock" is by going to my local Ford dealer and have them install the factory tune? Is there a way I can flash back to stock on my own using the MPVI2 if I don't have the factory tune file? I have *a* 2018 GT factory tune file, but not sure if I can use the MPVI2 to install this *other* stock tune or if I have to go to the dealer.

No, you need other tools that can brute force the stock cal in. There are a few.

IDS has many checks, that means if you have an old tune that was scrambled it might decide to not let you do anything as this will be damaged ecu in IDS book.
01-06-2023
Bill@HPTuners

Quote:

Originally Posted by WesDuenkel

Just tried to read a 2018 Mustang GT using a MPVI2. Got the "Validate checksum failed. Controller TC-298" error. I understand the procedure, but it seems odd to me that I'd be getting this error on a four year old vehicle...? Just curious if there's something else I'm missing. Files attached.

Attachment 127106
Attachment 127107

previously tuned and the os id scrambled(ie tunerlocked by the previous tuner)
01-08-2023
WesDuenkel

Quote:

Originally Posted by Bill@HPTuners

previously tuned and the os id scrambled(ie tunerlocked by the previous tuner)

Unbelievably, I was able to track down the previous owner, and he had the nGuage with the factory calibration. I was able to return it to stock and all is well!!! Thanks for the leads, everyone.