Tag: Xhorse Multi Prog

Problem:

Tried to program 2022 Nissan Sentra B18 smart key with xhorse vvdi key tool plus. It asks for a 32-digit rolling code.

Where can I get the pin code?

Solution:

Key tool plus cannot pull pin code for Sentra B18.

Need to remove HFM hands free module and read pin from dump.

Xhorse multi prog will read HFM data, but key tool plus cannot decode pin code automatically.

Need to send data to xhorse engineer to decode pin code manually.

Immobilizer deactivation (Immo Off) is a common procedure for Hyundai and Kia vehicles with the ME 17.9.1 ECU, often required after ECU repairs, key loss, or engine swaps. This guide outlines key steps and considerations.

Here we will show how to do Hyundai ME17.9.1 ECU immo off with xhorse multi prog programmer.

Select Kia Bosch ME17.9.1 ECU.

Check wiring diagram.

Connect ECU with multi prog.

Read and save int eeprom.

Read and save flash data.

Go to Tool tab- Turn off immo.
Select Hyundai-Elantra-ME17.9.11. Load original flash data.

Hit Turn off the immo.

Generate immo off file and save.

Load immo off file and write data to ECU with multiprog.

Verify checksum correction.

Write immo off data successfully.

IMMO OFF is done.

EXPERIENCE with EDC17C46, Xhorse Multi Prog, tuning files & BOOT recovery.

Tested a few tuning files (Stage 1 + EGR/DPF OFF) on a VW Tiguan Bosch EDC17C46 ECU.
To avoid any risk to the original unit, he intentionally cloned the original ECU just for testing, using VVDI2 for IMMO and MultiProg for EEPROM and FLASH read/write.
Here’s how it went:
Cloning worked perfectly – ECU booted with no issues.
Reading/writing via BENCH mode with MultiProg worked fine at first.
But when I tried flashing a tuned file, writing stopped at 34–37%.
Tried a professional file from Autotuner – exact same issue (stuck at same %).
Finally, he restored the ECU via BOOT mode (Tricore BSL) – flashed the original, and ECU came back to life.

Conclusion:
VVDI2 + MultiProg is a great combo for cloning (IMMO + PFlash)
Files from tuning platforms like Autotuner may not be compatible with MultiProg when flashing via BENCH.
If flashing stops at the same %, it’s very likely a file structure issue, not your tool.
BOOT mode with MultiProg saved the day – full recovery worked.

Here we will show how to read, write and disable the immobilizer (IMMO off) on the VW Passat B8 Bosch EDC17C74 ECU using the Xhorse Multi Prog programmer.

Xhorse Multi Prog read VAG Continental Simos 11.1 ECU in boot mode successfully.

In multi prog software, select VAG Continental Simos 11.1 ECU.

Check boot mode wiring diagram.

Connect ECU with mcu adapter.

Read INT flash and save.

Read INT eeprom and save.

How to read Skoda Fabia Simos PCR 2.1 ECU with Xhorse Multi Prog programmer on bench mode.

Reading the Simos PCR 2.1 ECU

Step 1: Selecting the ECU

• Navigate to the ECU section in the software and search for Skoda Fabia.

• Select the Simos PCR 2.1 (a Continental ECU) from the list.

Step 2: Pinout Connections

• Refer to the pinout diagram provided in the software.

• Use the included ECU adapter and circular connectors to link the Multiprog to the ECU.

• Ensure all connections are secure before proceeding.

Step 3: Read Internal Flash Data

• Click “Read” to begin the Flash reading process.

• The tool communicates with the ECU, displaying progress in real-time.

• The internal flash read takes approximately 5 minutes and 18 seconds.

• Save flash data.

Step 4: Read EEPROM Data

• The external EEROM read is faster at 43 seconds.
• Save the eeprom data.

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Xhorse Multi Prog programmer new user feedback:

Citroen Jumper 2018 year.

Delphi DCM6.2C ECU.

Read/write ok in boot mode.

Ad blue delete.

Checksum correction ok.

Some other tools i.e Foxflash, FC200, OBDSTAR DC706 will read and write SIM2K-241 ECU in boot mode without problem, but cannot do IMMO OFF within the device.

Xhorse Multi prog will do. It also does SIM2K-140 and SIM2K-341 IMMO OFF within software.

Procedure:

Model example: Hyundai Elantra Continental SIM2K-241 ECU

Run multi prog software, select model and ECU.

Check boot mode wiring diagram.

Follow diagram to connect P1, P2 and P3 boot pins. Connect multi prog with ecu via mcu adapter.

Read and save INT eeprom data.

Read and save INT flash data.

Go to Tool tab- Turn off the immo (IMMO OFF) function.

Select Hyundai- Other (SIM2K). There is no SIM2K-241 option, but select SIM2K-341 30134-2G810 instead.

Ensure your tool supports your specific firmware version.

Load int eeprom just saved.

Hit Turn off the immo and press OK to generate immo off file.

Save immo off file.

Load immo off file and write data to ecu.

IMMO OFF completed.

​The Bosch ME9.6.1 is an Engine Control Unit (ECU) used in various General Motors (GM) vehicles, including certain Opel, Saab, and Suzuki models. This ECU is known for its complexity, and handling it requires specialized tools and knowledge. Here we will show how to clone this ECM using Xhorse Multi Prog programmer.

Model example: Chevrolet Malibu (E77) Bosch ME9.6.1 ECM

Select Malibu Bosch ME9.6.1.
Check the wiring diagram. There are two types of wiring: E69 and E77. Select E77 type wiring here.

Connect origithe nal ECM with multi-prog.

Read EXT eeprom.
Read EXT flash of the original ECM.

Back up original ECM data successfully.
Disconnect original ECM.
Connect donor ECM with multi-prog.

Back up eeprom and flash data of the donor ECM.

Write original flash data to the donor ECM.

Multi-prog corrects checksum online.

Write original eeprom data to the donor ECM.

Install the donor ECM to vehicle.

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In this guide, we’ll walk through the process of cloning a Volvo S60 (2014) Bosch EDC17CP22 ECM (Engine Control Module) using Xhorse Multi Prog programmer. The original ECM had issues—check engine light was on, and the car wouldn’t start—so we replaced it with a used ECM and transferred the data from the old module.

Step 1: Preparing for ECM Cloning

Before starting, ensure you have:

• Multi prog (or a compatible programmer).
• Donor ECM (used/replacement unit).
• Original ECM data backup (critical to avoid programming errors).

Why Multi prog?

• No extra wiring needed—it has built-in schematics for easy connections.
• Supports reading internal and external flash memory separately.
• Faster and more reliable than other tools.

Step 2: Reading Data from the Original ECM

1. Connect Multi prog to the old ECM (power, ground, and ignition lines).
2. Read three sets of data:
   • Internal Flash
   • External Flash
   • EEPROM (critical immobilizer and calibration data).
3. Save all files securely—corrupted data can brick the ECM.

Note: Reading may take 4-5 minutes per section, and full backup is necessary before proceeding.

Step 3: Writing Data to the Donor ECM

1. Connect the replacement ECM to Multi-prog.
2. Load the saved files (internal flash, external flash, and EEPROM).
3. Write each section separately (Multiprog does not support full-file writing).
   • External Flash: ~8 minutes.
   • Internal Flash: ~1 minute 19 seconds.
   • EEPROM: ~2 minutes 2 seconds.
4. Verify successful writing—the tool will confirm completion.

Step 4: Testing the Cloned ECM

After writing:

1. Install the cloned ECM in the vehicle.
2. Turn on ignition—check for error lights.
3. Start the engine—if cloning was successful, the car should start normally.

Important: If the car doesn’t start, recheck:

• EEPROM data (most immobilizer issues come from incorrect EEPROM cloning).
• Power and ground connections to the ECM.

Done.

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