ByteCraft is a utility for calibrating ECU BIN files. It identifies the module and file ID, and shows available calibrations.
ByteCraft doesn't "replace" the file with a firmware from the web. You select the desired options yourself, the program carefully applies them to your file, and offers to save the result with a clear suffix for the selected modes.
Features
Local calibration using checkboxes: select the modes (e.g., Euro-2, EVAP, EGR, DPF, TVA, IMMO OFF, AdBlue, etc.). The program takes into account the data format (including endianness where relevant) and saves the result with a convenient title.
Dedicated handlers are available for a number of ECUs (Toyota/Lexus, Kia/Hyundai SIM2K, Opel Simtec/MT, BOSCH MED17.x, Mercedes ME 9.7, Nissan Hitachi, etc.) — no "universal workarounds."
How ByteCraft differs from "solution packages"
- ByteCraft modifies your file, not replaces it. It searches for signatures, prepares patches, and checks lengths/checksums where needed.
- Clear results. You can see which checkboxes are enabled and how this is reflected in the final file name.
- Easy to use: fast ID detection, available modes, history, stocks, and EOBD tips—everything at your fingertips.
The two different EOBD sections.
EOBD Error Search — Always Free You enter the error code (DTC), the program displays a description and warns you whether you can reprogram the vehicle with this error or whether it's better to fix it first. It uses general EOBD/OBD-II rules and the standard DTC structure (DTC according to SAE J2012).
EOBD Errors — Free for Files Calibrated in ByteCraft After calibrating a specific file in ByteCraft, access to the "EOBD Errors" section for that file is free. How it works: If the file has already been calibrated, you can upload it to the "EOBD Errors" section. This section will display a list of errors found in the dump, as well as those that weren't found, and will also suggest which codes can be further cleared by calibration, if needed. This means you can immediately see a DTC "map" for a specific file: what's present, what's missing, and what can still be disabled/corrected using calibration. For other files not yet calibrated in ByteCraft, the standard access conditions apply.
Supported ECUs: Toyota/Lexus, Kia/Hyundai (SIM2K, ME/MT), Mercedes ME9.7, Nissan Hitachi 512kb, Opel (MT/Simtec/E83), BMW MS45, BOSCH MED 17.4.4/17.8.31, VAG EDC17C46.
Stock File Search
Quickly search for factory firmware for comparison, database rollback, or preparing a standard.
Calibrations: EGR, DPF, AdBlue, TVA, Euro2, EVAP, VSA, IMMO_OFF, AirSap. Edits are applied safely.
Token-based operation (the maximum cost among selected options is charged; AdBlue — 5, DPF/TVA — 2, others — 1).
Neat interface: ECU selection, calibration checkboxes, operation log, dark theme.
Getting started: choose a module → open BIN → select calibrations → “Calibrate” → “Save”.
Requires Windows 10/11 and an Internet connection for token checks/server requests.
Updates — weekly. More ECUs. Tech support on Telegram.
Technical support support is provided by the developer directly.
