E2PA (E2P Analyser) is a powerful, specialized EEPROM and Flash tool designed for working with Bosch Engine Management Units. This utility provides advanced functions for modifying firmware, which is essential for tasks like ECU replacement, engine swaps, and professional tuning.



What Problem Does This Tool Solve?

When working with used Bosch ECUs, especially MED9.x, several critical data blocks need to be modified for the ECU to function in a new vehicle. This includes disabling the immobilizer (IMMO OFF), correcting checksums after a file has been modified, and adjusting other internal data like the flash counter or inventory information.

E2PA provides a single, powerful interface to perform all these tasks on an EEPROM/Flash dump, making the process of adapting a donor ECU much simpler and more reliable.

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Key Features

• Immo OFF: The primary function to permanently disable the immobilizer system within the firmware.
• EEPROM Checksum Correction: Automatically corrects checksums after the file has been modified, which is critical for the ECU to function correctly.
• FLASH Counter Adjustment: Allows for the modification of the internal flash write counter.
• Modify Inventory Data: Provides the ability to edit other inventory-related data within the firmware.
• OBD Read Protection: Includes a function to enable or disable reading of the ECU via the OBD port.

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Supported ECUs & Blocks

• Primary ECU Support: Bosch MED9.x with 2k/4k EEPROM.
• Supported Blocks: A wide range of immobilizer and data blocks are supported, including IMMO1, IMMO2, IMMO3, IMMO4, HW1, FDCUST, and many others.

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How to Use

1. Read EEPROM/Flash: First, you must read the full memory from your Bosch ECU using a compatible bench programming tool.
2. Load File in E2PA: Open the software and load your original dump file. The log will show "Started E2P Analyser."
3. Select Function: Use the buttons on the right to perform the desired action (e.g., "IMMO OFF", "Checksum").
4. Save New File: After the modification, save the new file.
5. Write Back to ECU: Write the new, modified file back to your ECU using your programmer.

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System Requirements & Testing

• Operating System: This software is Windows-based and has been tested on Windows 10 LTSC 2019.
• Required Hardware: An EEPROM/Flash programmer capable of reading/writing Bosch MED9.x ECUs is required.

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Disclaimer

This is an advanced tool intended for legitimate professional and educational purposes, such as repairing your own vehicle or performing engine swaps. Modifying a vehicle's immobilizer system may have legal implications. It is your responsibility to use this tool in compliance with your local laws. Use at your own risk.