Page organisation in this revision
- Page type
- Technical article
- Subject
- Tuning
- Parent
- Siemens MSS54
- Applies to
- Siemens MSS54
- Tool groups
- None
- Manufacturers
- BMW
Changes from revision 1 to revision 1
Removed text is struck through; added text is highlighted.
Documented extraction convention
The repository’s scripts/full2partial.py recognises a 524,288-byte MSS54 input and extracts two 16 KiB regions, writing slave data before master data. MSS54/MSS54HP partial extraction source.
Source input offset, inclusiveBytesOutput partial offset, inclusiveScript label0x48000–0x4BFFF16,3840x0000–0x3FFFSlave0x08000–0x0BFFF16,3840x4000–0x7FFFMaster
This table describes that script’s file convention. Establish whether the read tool produces the same orientation before applying it. The source script uses Python 2 syntax; the table is a static reading of its operations, not a report of executing it on an ECU image.
Checksums within the documented partial
The included checksum documentation identifies stored checks at partial offsets 0x3FFC and 0x7FFC for MSS54, and provides --info inspection and --fix-checksums operations. Its supported inputs are partial images, with distinct handling for MSS54HP. MSS54/MSS54HP checksum documentation; MSS54/MSS54HP checksum implementation.
Keep the checksum tool/version, input/output hashes and reported result with a change. Compare the actual changed ranges and establish which integrity checks the selected writer handles. A successful integrity calculation is one check in the validation workflow.
Keep the controller context explicit
The MSS54HP page records the larger-image extraction geometry. MSS52’s same-sized declared editing region does not establish this segment order or checksum algorithm for MSS52. Use the MSS52 definition record for the labels actually present in that source.
Preserve the untouched read and tool log. File-size and orientation checks describe the image being edited; the ability to restore a particular controller depends on the actual backup and supported programming method.
Sources and evidence
Original Tuning Wiki reference notes. Definition data and source-code observations are identified as such; they do not establish runtime behaviour or a tested calibration. Validation suggestions and worked arithmetic are editorial guidance. Sources checked 10 November 2026.
MSS54/MSS54HP: saildot4k, the OpenSource MSS54 Project and credited contributors. Use the original files and retain their individual credits.
MSS54/MSS54HP partial extraction source — commit dd845dd34225.MSS54/MSS54HP checksum documentation — commit dd845dd34225.MSS54/MSS54HP checksum implementation — commit dd845dd34225.
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Revision 1: MSS54 partial files and checksums
Documented extraction convention
The repository’s scripts/full2partial.py recognises a 524,288-byte MSS54 input and extracts two 16 KiB regions, writing slave data before master data. MSS54/MSS54HP partial extraction source.
| Source input offset, inclusive | Bytes | Output partial offset, inclusive | Script label |
|---|
0x48000–0x4BFFF | 16,384 | 0x0000–0x3FFF | Slave |
0x08000–0x0BFFF | 16,384 | 0x4000–0x7FFF | Master |
This table describes that script’s file convention. Establish whether the read tool produces the same orientation before applying it. The source script uses Python 2 syntax; the table is a static reading of its operations, not a report of executing it on an ECU image.
Checksums within the documented partial
The included checksum documentation identifies stored checks at partial offsets 0x3FFC and 0x7FFC for MSS54, and provides --info inspection and --fix-checksums operations. Its supported inputs are partial images, with distinct handling for MSS54HP. MSS54/MSS54HP checksum documentation; MSS54/MSS54HP checksum implementation.
Keep the checksum tool/version, input/output hashes and reported result with a change. Compare the actual changed ranges and establish which integrity checks the selected writer handles. A successful integrity calculation is one check in the validation workflow.
Keep the controller context explicit
The MSS54HP page records the larger-image extraction geometry. MSS52’s same-sized declared editing region does not establish this segment order or checksum algorithm for MSS52. Use the MSS52 definition record for the labels actually present in that source.
Preserve the untouched read and tool log. File-size and orientation checks describe the image being edited; the ability to restore a particular controller depends on the actual backup and supported programming method.
Sources and evidence
Original Tuning Wiki reference notes. Definition data and source-code observations are identified as such; they do not establish runtime behaviour or a tested calibration. Validation suggestions and worked arithmetic are editorial guidance. Sources checked 10 November 2026.
MSS54/MSS54HP: saildot4k, the OpenSource MSS54 Project and credited contributors. Use the original files and retain their individual credits.
Revision 1: MSS54 partial files and checksums
Documented extraction convention
The repository’s scripts/full2partial.py recognises a 524,288-byte MSS54 input and extracts two 16 KiB regions, writing slave data before master data. MSS54/MSS54HP partial extraction source.
| Source input offset, inclusive | Bytes | Output partial offset, inclusive | Script label |
|---|
0x48000–0x4BFFF | 16,384 | 0x0000–0x3FFF | Slave |
0x08000–0x0BFFF | 16,384 | 0x4000–0x7FFF | Master |
This table describes that script’s file convention. Establish whether the read tool produces the same orientation before applying it. The source script uses Python 2 syntax; the table is a static reading of its operations, not a report of executing it on an ECU image.
Checksums within the documented partial
The included checksum documentation identifies stored checks at partial offsets 0x3FFC and 0x7FFC for MSS54, and provides --info inspection and --fix-checksums operations. Its supported inputs are partial images, with distinct handling for MSS54HP. MSS54/MSS54HP checksum documentation; MSS54/MSS54HP checksum implementation.
Keep the checksum tool/version, input/output hashes and reported result with a change. Compare the actual changed ranges and establish which integrity checks the selected writer handles. A successful integrity calculation is one check in the validation workflow.
Keep the controller context explicit
The MSS54HP page records the larger-image extraction geometry. MSS52’s same-sized declared editing region does not establish this segment order or checksum algorithm for MSS52. Use the MSS52 definition record for the labels actually present in that source.
Preserve the untouched read and tool log. File-size and orientation checks describe the image being edited; the ability to restore a particular controller depends on the actual backup and supported programming method.
Sources and evidence
Original Tuning Wiki reference notes. Definition data and source-code observations are identified as such; they do not establish runtime behaviour or a tested calibration. Validation suggestions and worked arithmetic are editorial guidance. Sources checked 10 November 2026.
MSS54/MSS54HP: saildot4k, the OpenSource MSS54 Project and credited contributors. Use the original files and retain their individual credits.