Binwalk said the same:$ docker run -t -v "$PWD":/analysis refirmlabs/binwalk:branch-master -Me dodge.exe /analysis/extractions/dodge.exe ------------------------------------------------------------------------------------------------------------------------ DECIMAL HEXADECIMAL DESCRIPTION ------------------------------------------------------------------------------------------------------------------------ 0 0x0 Windows PE binary, machine type: Thumb 4066336 0x3E0C20 CRC32 polynomial table, little endian 4067375 0x3E102F Copyright text: "Copyright 1995-2002 Jean-loup Gailly " 4070255 0x3E1B6F Copyright text: "Copyright 1995-2002 Mark Adler " 4186952 0x3FE348 CRC32 polynomial table, little endian 4193320 0x3FFC28 Copyright text: "Copyright (C) 1994-2008 Lua.org, PUC-Rio $ $Authors: R. Ierusalimschy, L. H. de Figueiredo & W. Cele" 4241612 0x40B8CC Copyright text: "Copyright 1998-2004 Gilles Vollant - http://www.winimage.com/zLibDll" 4241698 0x40B922 Copyright text: "Copyright 1998-2004 Gilles Vollant - http://www.winimage.com/zLibDll" 4298913 0x4198A1 Copyright text: "copyright_navman." 4298941 0x4198BD Copyright text: "copyright." It does not support the beeper on this Mio device, so no audio hints as well. The Mio maps are so out of date that the instructions more often than not are incorrect. ConclusionThanks to open source software and a bit of reverse engineering, a 10 year old GPS device is now fully functional.