Hex Editor / Reverse Engineering
WinHex, from X-Ways, is a long-established Windows hex editor, disk editor, and computer-forensics tool. In ECU work it is used as a general-purpose binary editor for firmware and calibration dumps, viewing and editing raw bytes, searching for hex and ASCII patterns, comparing two files to spot differences, which is useful for locating changed maps between an original and modified dump, computing hashes and checksums, and analyzing file structure. Its data interpreter, templates, and byte-level editing help reverse engineers understand map layouts, byte order, and data types inside an ECU image. Beyond automotive use it is widely applied in digital forensics and data recovery. WinHex is a raw-byte tool: it does not know ECU maps or checksums automatically, so it is used alongside dedicated map editors and definition files.
Softechpro automates what a hex editor does by hand for supported files, locating and applying DPF/EGR/AdBlue/DTC-off and Stage changes and fixing checksums across roughly 1,400 firmwares, while WinHex remains valuable for manual analysis of ECUs Softechpro does not yet cover.
See Softechpro plansTry the file service