Quick take
BTT EWS Deleter is a lightweight Windows utility for creating EWS-OFF files from BMW ECU BINs. Drop a dump, process, and save—ideal for bench/off-road builds, engine swaps, and authorized workshop recovery.
What it does
Supported ECU families (from the in-app Compatibility list)
Typical vehicle families (examples)
E36/E38/E39/E46/E53, E60/E61, E63/E64, E65/E66, E70, E83, E85/E86, E90–E93, E60 M5/E63 M6, E46 M3 & CSL, plus many E-series diesels with DDE4, selected later models with MEVD/EDC17 (check Compatibility).
Workflow
Best practices
Why workshops use it
Download & access
Free for registered forum members — sign in or create an account to see the links.
Archive password (all ZIPs):
Platform support
Works on Windows 7, Windows 8.1, Windows 10, Windows 11.
Tested on Windows 10 LTSC (2019); also verified on recent Windows 11 builds.
Minimum system requirements
Legal notice
Immobilizer functions are intended for authorized diagnostics, repair, and motorsport/off-road applications only. Follow local laws and OEM policies. Information above is compiled from publicly available sources, files (if any) are hosted by third parties, and our forum does not store or distribute software.
BTT EWS Deleter is a lightweight Windows utility for creating EWS-OFF files from BMW ECU BINs. Drop a dump, process, and save—ideal for bench/off-road builds, engine swaps, and authorized workshop recovery.
- Opens raw BIN dumps from supported BMW petrol & diesel ECUs
- Applies model-specific immobilizer delete patterns (EWS/ISN handling)
- Preserves the rest of the calibration/flash layout; outputs a clean BIN for write-back
- One-window UI with drag-and-drop, Load BIN → Save BIN, and a live Compatibility list
Supported ECU families (from the in-app Compatibility list)
- Siemens MS41, MS42, MS43, MS45 — M52/M52TU/M54 families
- Bosch ME7.2 — M62TU V8
- Bosch ME9.2 (EK924/EK928.0) — N62 series
- Siemens MSS50, MSS52, MSS54 / MSS54HP / CSL — S50B32 / S62 (E39 M5) / S54 (E46 M3)
- MS570, MSV70, MSV80 — N52/N52K
- MSS65 — S85 V10 (E60/E63 M5/M6)
- DDE4 (EDC15C BMW) — M57 early diesels
- ME17 / MED17 / MEVD17 / EDC17 types — later N-series petrol & diesel (model-dependent)
Typical vehicle families (examples)
E36/E38/E39/E46/E53, E60/E61, E63/E64, E65/E66, E70, E83, E85/E86, E90–E93, E60 M5/E63 M6, E46 M3 & CSL, plus many E-series diesels with DDE4, selected later models with MEVD/EDC17 (check Compatibility).
Workflow
- Click Load BIN (or drag & drop) and open your ECU dump.
- Confirm the ECU family in Compatibility, run the EWS-OFF routine.
- Save the modified BIN and program it back with your preferred flasher.
Best practices
- Keep an untouched backup of the original dump (before any edits).
- Verify checksums with your flashing tool if required by the ECU type.
- Record VIN/ISN data for traceability in service reports.
Why workshops use it
- Extremely fast file processing; no online activation prompts
- Clear coverage list inside the app
- Handy for authorized recovery after CAS/EWS module faults and for legitimate swap projects
Download & access
Free for registered forum members — sign in or create an account to see the links.
Archive password (all ZIPs):
binunlock.comPlatform support
Works on Windows 7, Windows 8.1, Windows 10, Windows 11.
Tested on Windows 10 LTSC (2019); also verified on recent Windows 11 builds.
Minimum system requirements
- CPU: Dual-core 2.0 GHz or better
- RAM: 2 GB (4 GB recommended)
- Storage: 100–200 MB free
- Display: 1280×720 or higher
- NET Framework: 4.x
Legal notice
Immobilizer functions are intended for authorized diagnostics, repair, and motorsport/off-road applications only. Follow local laws and OEM policies. Information above is compiled from publicly available sources, files (if any) are hosted by third parties, and our forum does not store or distribute software.
