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Available languages — PSF
Afrikaans Alemannisch aragonés asturianu azərbaycanca Bahasa Indonesia Bahasa Melayu Bân-lâm-gú Basa Jawa Baso Minangkabau bosanski brezhoneg català čeština dansk Deutsch eesti English español Esperanto estremeñu euskara français Frysk Gaeilge Gàidhlig galego Hausa hrvatski Igbo interlingua Interlingue isiXhosa isiZulu íslenska italiano Kiswahili Kreyòl ayisyen kréyòl gwadloupéyen kurdî latviešu Lëtzebuergesch lietuvių magyar Malagasy Malti Nederlands Nedersaksies norsk norsk nynorsk occitan Oromoo oʻzbekcha/ўзбекча Plattdüütsch polski português română shqip slovenčina slovenščina Soomaaliga suomi svenska Tiếng Việt Türkçe Vahcuengh vèneto Wolof Yorùbá Zazaki српски / srpski беларуская български қазақша македонски монгол русский тоҷикӣ українська Ελληνικά Հայերեն ქართული नेपाली मराठी हिन्दी অসমীয়া বাংলা ਪੰਜਾਬੀ ગુજરાતી ଓଡ଼ିଆ தமிழ் తెలుగు ಕನ್ನಡ മലയാളം සිංහල ไทย မြန်မာဘာသာ ລາວ ភាសាខ្មែរ ⵜⴰⵎⴰⵣⵉⵖⵜ አማርኛ 한국어 日本語 中文(简体)‎ 吴语 粵語 中文(繁體)‎ ייִדיש עברית اردو العربية پښتو سنڌي فارسی ދިވެހިބަސް

There are two file formats for Map data called "PSF".

PSF Initiative

This file format is not specified yet, no details known about.

Medion GoPal Navigator

The Medion GoPal navigation devices are shipped with maps in files extended by .PSF. This format is some kind of binary-mix.

Official support

Medion, vendor of the device and maps, replied on my request as following:

Zu unserem Bedauern ist die Nutzung von eigens erstellten Karten mit dieser 
Software nicht möglich, dieses Feature wird von der Software generell nicht 
unterstützt. Ebenfalls können wir Ihnen nicht mit einem Konverierungsprogramm 

(translation in english: The usage of self-created map data is not possible. This feature is generally not supported by the software. Additionally, we cannot offer you a converter software.)

Hacking the file format

I'm not skilled for that, but I did a few tests, though. :)

The device checks the MD5-Hashes, stored in a file in the root directory of the flash card. This hash has to be recreated after changes made to the data file.

The file format consists of some text and a bunch of binary data. The text contains (afaics) all the motorway exits. But *not* plain city names or street names. Many street names cannot be found in plain text and seem to be encoded somewhere.

Supported features of those maps (maybe incomplete):

  • display and routing (of course)
  • lane assistant
  • text-to-speech (don't know if the map file has something to do with that)
  • speed limit imformations