E2PA updated from 2.0.0 to Build 2.1.1
Bosch MED9.x EEPROM/FLASH analyser package has been refreshed to
E2PA Build 2.1.1.
Tool remains focused on Bosch MED9.x ECUs with 2k/4k EEPROM and is still used for professional ECU replacement, donor adaptation and firmware editing on VAG platforms.
Changes vs 2.0.0
- Core executable updated to Build 2.1.1 (About window now shows copyright 2014–2024 Technic).
- Confirmed support for Bosch MED9.x with unencrypted 2k/4k EEPROM is retained and documented directly in the About window.
- Supported block list clarified and extended in the documentation:
FD, IMMO1, IMMO2, IMMO3, IMMO4, HW1, FDCUST, SGID, DVE, TESTER1, TESTER2, CALIB1, CALIB2, DFPMEEP, PRGID, PRG, PRG2, VER, IUMPR, WVD, DFPMEEP5.
- General maintenance update from the author – internal improvements for checksum handling and NOREAD/OBD patching while keeping the same workflow and interface.
Key functions available in Build 2.1.1
- FLASH Counter adjustment – view and adjust MED9.x internal flash write counter.
- EEPROM checksum correction – automatically fix checksums after manual edits so ECU can start correctly.
- Inventory data editing – modify ECU inventory and metadata blocks (VIN, software coding and related values).
- Immo data handling – dedicated IMMO blocks (IMMO1–IMMO4) for immobiliser-related data.
- OBD read protection – toggle OBD readout protection where supported by the calibration.
- FLASH checksum correction for OBD / NOREAD patching – checksum routines adapted to files where NOREAD has been patched.
Package notes
- Prepared as a ready-to-use workshop build for Windows PCs; works on modern Windows 10/11 when run with administrator rights.
- Requires an external EEPROM/FLASH programmer to read and write MED9.x dumps – E2PA itself operates on files only.
- Previous 2.0.0 archive in the main resource has been replaced with the new Build 2.1.1 executable; usage flow and interface remain the same as described in the original description.
Legal & safety notice
This tool is intended for legitimate repair and educational use – for example ECU replacement on your own vehicle or engine conversions.
Disabling or modifying immobiliser and security functions can have legal consequences in some countries. You are responsible for complying with local laws and for any changes you apply to vehicle ECUs.

