foxflash ECU Programmer Common Problems and Solutions (Newest)

Here are some new problems of foxflash ECU Chip Tuning Tool and related solutions provided by obdexpress.co.uk engineer.

 

Problem 1: foxflash cannot change software language and select driver

Problem 2: foxflash Shutdown during Virtual reading and writing via OBD

Problem 3: foxflash read VAG MG1CS011/PSA MD1CS003 “Error SK2 Bench Locked”

Problem 4: foxflash write Benz EDC17C66 “Error Unlock Password” on bench

 

In details…

 

Problem 1: foxflash cannot change software language and select driver

Start the foxflash software normally, but cannot change language and select driver, click the related item and there is no response.

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Solution:

Foxflash ECU programmer must be connected and powered, the device driver must be installed correctly (check Windows device manager), Windows time auto sync must be off, Foxflash manager app also must be open and active when using foxflash software.

1.Shutdown date and time automatically syncs

2.Shutdown defender

3.Shutdown antivirus system

4.Run foxflash Manager and click Active button

5.Keep Manager running

6.Run foxflash software

 

Problem 2: foxflash Shutdown during Virtual reading and writing via OBD

Sometimes foxflash software shutdown during virtual read and write via OBD – in 15% progress and dialog window “WAIT INTERNET CONNECTION”.

 

User’s solution:

I tried to reinstall FoxFlash, change the USB cable, disable Avast antivirus, disable Win Defender protections (also in the registry), change power settings in the laptop, and reinstall NET. Framework, Visual C++, improve internet connection and the only workable SOLUTION in my case was INSTALL NEW CLEAR OS WINDOWS 10 64bit. I have a mess in my old Win10 OS. So now I use dual boot Win10 – old one, and new clear one only for FoxFlash – finally, FoxFlash works great always. ”

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If this still happens on a clean PC, try a different internet connection like friends, also check the folder properties are not read only.

Quitting also occurs during the VR read if the main program folder properties are set to read only in Windows.

 

Problem 3: foxflash read VAG MG1CS011/PSA MD1CS003 “Error SK2 Bench Locked”

Some customers gave feedback that they cannot read 2022 vag cupra MG1CS011 and 2022 PSA md1cs003 with foxflash tool. The connection is OK, but the software appeared with the message “Error SK2 Bench Locked”.

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Solution:

2022 have trprot…Not possible to read with many tools.

Cannot do it after July 2020 on some as the bench is locked. Flex does not do either.

Bench mode uses a security exploit in Firmware to gain access to the bootloader on the processor, after 2020 most manufacturers updated ECU firmware so the exploit no longer works.

 

Problem 4: foxflash write Benz EDC17C66 “Error Unlock Password” on bench

The first time can write files ware ok, but want to write the same ECU with another file the second time, The error message “error unlock password” happened.

 

Solution:   

It indicates that the ECU is locked and requires an unlock code before it can be programmed. This can happen if you have attempted to program the ECU with an incorrect or corrupted file, or if the ECU has been tampered with in some way.

 

Try to solve the problem with the following methods:

  • Check if you use the correct programming tool and software for your ECU.
  • Make sure the ECU model is supported by your tool, and if the tool has the latest software version.
  • Try reading the original file from the ECU and saving it as a backup before attempting to write a new file. This will ensure that you have a working backup in case something goes wrong during the programming process.
  • Ensure that you have the correct unlock code for the ECU. If you do not have the code, you may need to contact the manufacturer or a professional programming service to obtain it.
  • Check if the ECU is properly connected to the programming tool and that all connections are secure. A loose connection could cause programming errors.
  • It’s also worth noting that some ECUs have built-in security measures that can prevent unauthorized programming. If none of the above steps work, you may need to consult a professional with experience in programming your specific ECU.

 

Do boot or fit ECU to the car and start the engine for minutes before removing for the bench.

 

Foxflash read EDC16C66 in boot mode instruction:

BOSCH EDC17 C66 [ TC1793 INT.F.] – Mercedes Benz

Step 1: Read and Write ECU

Connect with the multifunction cable the following pinout and the boot shown below.

Use the driver:

→ TOOLS BOOT MODE

→ INFINEON TRICORE Boot

→ SAK TC1793

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Step 2: Password Search

Disable the boot mode by unsoldering the grey wire. Connect the pinout below.

Use the driver:

→ TOOLS BOOT MODE

→ INFINEON TRICORE Tool Password

→ PASSWORD BFT

→ Click on “Find Password” and follow the foxflash software messages.

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Now that the password has been found, and it’s possible to read and write the control unit as described in STEP 1.

 

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