• WM 2007-2011 335i

• WM 2007-2011 335xi

• WM 2010-2013 335is

• WM 2008-2011 135i

• WM 2008-2010 535i

• WM 2008-2010 535xi

• WM 2011-2012 BMW 1M

Examples will be given for each on how to break down the full length ROM ID for N54/N55 cars to distinguish Hardware type, ROM Family, and the specific calibration ID.

N54:
ex 0044CC0IJE0SIFA2S

0044CC0 - The first 7 digits are the hardware ID. They tell you what DME is in the car. (0044CC for MSD81, 0044DC for MSD80)

IJE0S - ROM family. Basically, the operating system (Windows 7 vs 8.1 vs 10, etc) for the DME/ECU. This is the main thing you need to look at for support questions.

IFA2S - Calibration ID. This is the actual tuning revision/changes for a ROM within a ROM family. We can easily add support for new Calibration IDs (less than 1 day normally).

Note:  2007 models had a MSD80 and start with 0044DC0, 2008+ N54s had an MSD81 and start 0044CC0

N55:

ex 008798098G0BQED2S

0087980 - The first 7 digits are the hardware ID. They tell you what DME is in the car. (0044CC for MSD81, 0044DC for MSD80)

98G0B - ROM family. Basically, the operating system (Windows 7 vs 8.1 vs 10, etc) for the DME/ECU. This is the main thing you need to look at for support questions.

QED2S - Calibration ID. This is the actual tuning revision/changes for a ROM within a ROM family. We can easily add support for new Calibration IDs (less than 1 day normally).

Note: Everything we can support (N55) will start with 0087980. The new DME (one we don't support) starts with 00879S0.

Note 2: N55 ROM revisions 96A0B and 9780B are NOT supported as they can cause the DME to become unresponsive during the flashing process and render the vehicle inoperable.

How to Determine if the Accessport Works on Your 2012 N55 BMW - Only EARLY 2012 models are supported. This will show you how to determine if you have an early 2012 model ECU.

Supported BMW ROM Families

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