LGU file tools

Convert LGU firmware update package files used by Dacia & Renault MediaNav systems.

What is LGU?

An LGU file is a firmware update package used by Renault & Dacia MediaNav and R-Link navigation and entertainment systems (which run on Windows CE 6.0).
The firmware update is usually stored on a USB drive and then installed on the MediaNav.
m-a-x-s-e-e-l-i-g/MediaNav-to-Evolution-Upgrade contains a guide on how to upgrade MediaNav, and also contains two LGU files.

📦 Downloads

Version	Download Link	Notes
v3.04	Download	Translated to English
v3.03 FavreMod	Download	Made compatible with MN1 6.0.3MD
v2.0.1	Download	Fixed some bugs, added the ability to close upgrade.lgu also for MEDIANAV EVO
Legacy	Download	Predates known releases

Usage

To extract the contents of an LGU file, run the following command in a terminal window:
lgu2dir.exe <input lgu file> <output folder>

To create an LGU file from a folder, run the following command in a terminal window:
dir2lgu.exe <input folder> <output lgu file>
example: .\lgu2dir.exe upgrade.lgu output

Tool.bat Usage

Main Menu

• E — Extract .lgu file
• C — Compress .lgu file
• X — Exit

Extract Options

• U — Extract Upgrade.lgu → outputs to Medianav/
• R — Extract Upgrade_root.lgu → outputs to Medianav/

Compress Options

• U — Create Upgrade.lgu for MN1 → outputs to New/
• R — Create Upgrade_root.lgu for MN1 → outputs to New/
• W — Create Upgrade.lgu for MN2 → outputs to New/

📁 Requirements

• External tools: lgu2dir, dir2lgu must be in the same folder or in PATH.
• Medianav and New directories must exist or will be used for output.

Credits

Originally created by FavreMod using tools by djeman. Uploaded here to keep them accessible and prevent them from getting lost.

Source code (if you want to compile it yourself):
yosicovich/MediaNavMods – lgutool