User jails 2014 Renault Latitude navigation system to change time
Original title: Jailbreaking my car's navigation system just so I can change the time
Reverse engineering allowed access to the time settings menu on a TomTom Carminat LIVE unit after the SD card menu definition was missing.
A 2014 Renault Latitude navigation system required a specific SD card with menu definitions to access time settings. Without it, the menu was missing and only a 'No maps found!' message appeared. The user reverse engineered the unit using GitHub resources and QEMU emulator to modify the update image and flash it. The system used Linux 2.6 with Samsung S5P6440 SoC and had DRM checks.
- Navigation SD card required for menu definitions.
- Used QEMU emulator with custom kernel to test modifications.
- Update image had high-entropy data and signatures.
- TomTom Carminat LIVE codename beaumont.
Impact: unauthorized access to time settings
- Products
- Latitude navigation system
From the original article
11 min read at blog.nns.eeThe car that I drive is a 2014 Renault Latitude. It's not a fancy car by any means and is starting to show its age, but it gets me from point A to point B and does everything else reasonably well so I've never really had any reason to complain. When I bought the car, the previous owner asked me whether I wanted a "navigation map SD card" with it.
By blog.nns.ee by xx · blog.nns.ee
A short excerpt; the article and its images belong to the publisher. Summary, key facts and assessment above are AI-written from the article and can be wrong.