#multi prog programmer

In this guide, we'll walk you through the process of cloning an original car key using VVDI BMW Dedicated Adapter. This method supports BDC2, BDC3, BCP, and U chassis—keys cloned with these adapters can be used directly in the vehicle without additional programming.

Adapter Overview

Three adapters require opening the key shell and clamping directly onto the key PCB for reading.

One adapter allows reading by clamping directly onto the key shell—no need to open it.

Supported Devices

Key Tool Plus and Multi Prog: Support both encrypted and non-encrypted keys.

Key Tool MIDI, Key Tool Max Pro, Key Tool Max, Mini Key Tool, and VVDI Prog: Support non-encrypted keys only.

Step-by-Step Operation

e.g. Xhorse VVDI Key Tool Plus Pad

1.Generate Remote

Open the software and click on Remote Program.

Select the corresponding option and click Generate.

Once complete, return to the main interface.

2.Start Programming

Click on Programming → BMW → Select from System.

Choose G/U Chassis BDC3/ BCP IMMO system option, then click Start Programming.

3.Connect Adapter and Read Original Key

Use VVDI BMW Adapter designed for the BMW U-type remote PCB.

Click Read Original Car Key Information and follow on-screen instructions.

Locate the holes on the PCB and align them with the positioning pins on the adapter.

Press down to lock in place, then connect Xhorse BMW Dedicated Adapter to VVDI Key Tool Plus via DB15 cable.

Click Read, then save the file when completed.

4.Generate Dealer Key

Remove the adapter and click Make Dealer Key.

Select No, then place a new BMW remote into the coil.

Click OK to start generating the key.

Once finished, the clone is successful and the key can be used in the vehicle directly—no further programming needed.

Other Adapters

The operation steps are similar for the remaining three adapters:

One adapter is designed for BMW square-type remote PCB.

Another is for BMW long-shaped remote PCB.

The last adapter clamps directly onto the key shell—align the MSDA and MSCL pins with the two points on the key PCB and clamp in place.

Video guide:

Hey everyone, let me walk you through an ECU cloning job I just wrapped up using the Xhorse Multi Prog. A customer dropped off two modules - one original, and a used one from eBay - and asked me to copy the data from the original to the replacement. No complicated instructions, just a straightforward clone. Here's how it went.

Step1. Connect First, I hooked up the original ECU. The Multi-Prog makes pin-outs super clear, so even if you're not a wiring diagram expert, you'll get it right. I selected the ECU model - in this case, a VW CC with an MED 17.1 - and hit Connect.

Step2. Read EPROM & Flash Once connected, I focused on two key sections: Internal EPROM and Internal Flash.

I started by reading the Internal EPROM. Hit the read button, waited for the progress bar, and checked to make sure the data wasn't blank. Everything looked good, so I saved the file.

Next, I moved to the Internal Flash. Reading this takes a bit longer since the file is larger, but once it finished successfully, I scrolled through to verify the data and saved it, too.

Step3. Write Then I switched over to the used ECU. Following the same pin-out diagram, I connected to it, opened the saved EPROM file, and hit Write. After that, I did the same for the Flash file.

And that's basically it. After writing both files, I disconnected everything. The customer just needs to plug the cloned ECU into the vehicle and perform a mileage calibration. Once that's done, the car should start right up.

The Xhorse MultiProg really keeps things simple - even if you mix up the pins, it's pretty tough to break anything. Whether you're new to ECU work or a seasoned tech, this tool makes cloning straightforward and reliable.

Problem: The XHORSE Multi-Prog Programmer screen is blank without a menu. I can't perform any functions. What's wrong with it? Please help.

Solution Follow the below to disassemble Multi-Prog device: 1) Remove 6 screws on the back. 2) Remove all screws on the side. 3) Remove in the direction of the arrow. 4) Disconnect and reconnect all wires to the device.

If the above steps still do not work, please contact Xhorse after-sales.

Problem: Why the XHORSE Multi-Prog Software prompt: "Not connect to the device, please check and try again!" What's the reason?

Am I misconnecting? Please help.

Solution 1. Check if the device connection is correct. 2. Check if the driver was installed successfully. In general, the Multi-Prog driver will automatically install with software. If not, please install it manually.

Help >> Install the driver >> USB Serial(CDC)

After installation, check if the Task Manager can recognize the driver.

3. If none of the above work, please contact Xhorse for help.

XHORSE Multi-ProgProgrammer can force unlock BMW CAS4 5M48H successfully if the simple chip unlock fails. Next, I'll demonstrate both unlock operations.

1. Simple Unlock BMW >> BMW(IMMOBILIZER) >> CAS4-5M48H-R/W-UNLOCK >> OK >> Unlock Already backup the Dflash & Pflash? OK Chip unlocking failed! Error code: 00000084 command number error.

In this case, we can try the Force Unlock method below.

2. Force Unlock Reselect the option: BMW >> BMW(IMMOBILIZER) >> CAS4-5M48H-FORCE-UNLOCK >> OK >> Unlock Maybe lost data, continue? OK Unlock success!

The XHORSE Multi-Prog Software SW V1.2.3.0 and firmware V1.2.7 version has fixed the issue that the CAS4 Solder-Free Adapter is not working for multi-prog programmer.

FW V1.2.7 has fixed 9S12 reading issue to decode CAS4+(5M48H).

XDNP12 Solder-Free Adapter has 2 versions: V1.3 & V1.2. The difference is that the new type adapter V1.3 has the relay inside, while the old V1.2 does not. So the old V1.2 works perfectly while the V1.3 still needs some work.

Following I'm going to demonstrate how Multi-Prog Programmer works. Device >> BMW(IMMOBILIZER) >> CAS4-5M48H-BACKUP(ADAPTER) D-FLASH >> Read Reading success.

Let's check the file, all the data is right. Like the module number 5WK50720HBR, it's all correct!

Today I'm gonna show how to clone BMW X3 Continental MSV90 ECU with Xhorse Multi-Prog Programmer by bench. Here I prepared an old ECU and a new one.

Note: Please ensure the Multi-Prog Software version is 1.44 or above. Verify file integrity before writing.

Open Multi-Prog software, Device >> BMW_CONTINENTAL_MSV90(BMW -> X3 Series) Follow the wiring diagram to connect Multi-Prog & ECU.

Read the EEPROM data file. Read the FLASH data file. Open and then verify to ensure the file's integrity. Write info to the new ECU.

All >> Immobilizer Write the serial number of the new ECU. Device >> BMW_CONTINENTAL_MSV90(BMW -> X3 Series) Select BENCH to write the info without removing the ECU. Click EEPROM to write the file. Click FLASH to write the file. Open >> Write Wait until the percentage until 100%... Starting the car.

Connect the new ECU to the car. Start the car successfully.

This post will guide you on how to use Xhorse Multi-prog Programmer to read and write EEPROM.

First, we check the model of the EEPROM.

Then we open the Multi-prog software. Click "Device">>"Serial EEPROM&FLASH", and enter the model number. Open the "Details" and you can see the device information, important prompt, and adapter information.

Now we learn that the chip requires a VH13 adapter.

Remove the magnetic shield and check the adapter model. Confirm that it is a VH13 adapter and put the shield back. Place the chip aligned at the bottom, ensure that the pin one is upward, and then lock it.

Click to read the data and here will show the reading progress. It's successful. We can modify the data just like this and click here to write it in.

When we read the data again, we can see that the data has been modified successfully.

For more details, please refer to the video below: