Data recovery (VPN certificates) from demaged eMMC chip - Tesla MCU1

Data recovery (VPN certificates) from demaged eMMC chip - Tesla MCU1 is a service addressed to individuals and companies who due to damage to eMMC memory have lost access to VPN certificates enabling proper communication with Tesla servers. The lost data may have occurred as a result of damage to the controller, damage to the eMMC protocol pads, erroneous voltages when making a copy of the system by ISP methods or the system defect itself.
 

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Who is this service dedicated to? 
Reading from eMMC via the NAND protocol is dedicated to cases in which the eMMc / eMCP memory controller is damaged (memory not detected, memory detected with 32Mb size). Method can be used also when chip is mechanicaly demaged due wrong ChipOff procedure.

What schould I do when I decide to use your service ?

Step1 - Fill data recovery form (NOT SERVICE FORM) at https://multi-com.eu/,application_form.html

Step2 - Wait for verification of your case by our lab - once it's done you will recive PDF form. Please print PDF, sign and send to address you recive in e-mail.

Step3 - Wait for recovery process to finish and notification about payment. You will get from us 4 files which are neccessary to run your MCU to fully communicate with Tesla servers:

- car.crt
- car.key
- ta.key
- mcu_commands
- carkeys.tar
*shadow

* we cannot guarantee that we will be able to recover ashadow file but we will do everything to get it from chip

The initial cost of the expertise/diagnostics (initial fee) of the sent devices or telephones in terms of the possibility of data recovery is EUR 45 excl. VAT (if apply). This fee is charged automatically if the recovery cannot be performed (e.g. the condition of the device differs from the description, damage of memory/SoC or motherboard preventing repair and recovery, non-standard sec.)



Why us? 
The main advantage is the fact that we are not intermediaries - the equipment never leaves our company and the entire data recovery is done in our laboratory. We are able to recover data from approximately 90% of the device models available on the market. We support file systems such as:


 

What tools do we use? 
For repairs we use the latest extraction methods using the original / licensed software and hardware.









FAQ 

Question: Is it possible to pay by bank transfer in advance?
A: No. This is due to the fact that the card may be damaged in a way that prevents the recovery of data from it (eg a broken memory chip) and the recovery of data is not possible. In this situation, we do not charge a service fee and the only cost for the customer is the transport fee.

Question: How long does the repair take?
Answer: We try to make the time of data recovery as short as possible - the standard time is 14 days, omitting the need for transport, in the accelerated version it is 7 business days and in Express it is 3 days from the moment of receiving the phone (accelerated options and express are additional paid options)

Question: Is there a VAT invoice issued for the service?
Answer: Yes. We issue VAT invoices.

You will receive the downloaded on PenDrive or uploaded to FTP

Product placed on the market in the EU before December 13, 2024: YES

Warnings and Safety Guidelines for Software Use

Based on the requirements of Regulation (EU) 2023/988 on General Product Safety (GPSR), we present a list of safety warnings. The purpose is to protect users from potential hazards resulting from improper use of products/devices/software. The warnings are formulated in a simple and understandable way to ensure accessibility for a wide audience, including elderly people and individuals with mobility limitations.

List of hazards and safety precautions for software use

1. Risk of data loss or system damage
* Hazard: improper installation, deletion of system files, or lack of backups.
* Precautions: always perform regular backups; install software only from trusted sources.

2. Exposure to cyberattacks (viruses, malware)
* Hazard: downloading files from unverified websites, lack of antivirus protection.
* Precautions: use up-to-date antivirus programs, avoid opening suspicious email attachments, enable automatic updates.

3. Hardware overload and overheating
* Hazard: intensive software use (e.g., graphics processing, floating-point calculations, BF) may lead to device overheating.
* Precautions: use the device in a well-ventilated area, do not cover ventilation openings. If overheating occurs – turn off the device and wait several minutes for it to cool down.

4. Risk of electric shock and cuts (indirect)
* Hazard: although software itself poses no physical risk, improper use of computer equipment (e.g., touching cables in a damp environment) while using programs can be hazardous.
* Precautions: never operate computer devices with wet hands, avoid working in damp rooms, and regularly check cables and casings.

5. Health risks from prolonged use
* Hazard: eye strain, back pain, wrist and shoulder discomfort caused by long hours of computer work using office software.
* Precautions: take regular breaks every 45–60 minutes, use an ergonomic chair and keyboard, and position the monitor at eye level.

6. Dangers for children and inexperienced users
* Hazard: children may accidentally download harmful programs or share personal data.
* Precautions: enable parental controls, do not leave children unattended at the computer, and educate them about safe online behavior.

7. Problems in high-humidity or high-temperature environments
* Hazard: using software in high-temperature conditions (e.g., laptop on the lap in direct sunlight) or in humid environments (e.g., kitchen, bathroom) can cause hardware failure and indirect user risks.
* Precautions: use the equipment in suitable climate conditions, avoid using it near heat sources or in high-humidity areas.

8. Risks related to maintenance and updates
* Hazard: lack of software updates may create security vulnerabilities – unskilled attempts to modify the system may result in data loss.
* Precautions: always install official updates; do not modify system files without technical knowledge. Use authorized service support.

Importance of Following Warnings
Adhering to the above warnings minimizes the risk of bodily injury, equipment failure, and material loss. Ignoring these recommendations may lead to serious health and property hazards. Ensure your safety and that of others by following the indicated precautions. Detailed warnings or safety information about the product can be found in the user manual included with the product or available as a PDF on the manufacturer’s/supplier’s website.