Camera NTSC/PAL Patch

The Media Nav unit uses a Techwell TW9900 video decoder chip for the camera stream, that supports the following video format specifications:
– NTSC (M) (this is the default mode)
– PAL (B, D, G, H, I)
– NTSC 4.43
– PAL (M)
– PAL (CN)
– PAL 60

By default, the unit uses NTSC-M and displays the camera stream accordingly, since the majority of backup cameras use this specification. In order to use a PAL camera, a patch is required and can be found in the table below.

Note: This patch applies only to first and second generation Media Nav units (MN1 & MN2), firmware versions 4.0.6, 6.0.4 or 7.0.5. It may work with other generations and firmware versions, yet it is not guaranteed.


Camera VersionMedia Nav VersionCompatible FirmwareDownload Link
NTSC-M (default)MN14.0.6DOWNLOAD
NTSC-M (default)MN26.0.4DOWNLOAD
NTSC-M (default)MN27.0.5DOWNLOAD
Note: X denotes any digit from 0 to 9.

Camera Viewer Alternatives (MN1)

For Media Nav (MN1), firmware version 4.0.6, there are 2 alternative viewers, other than the original:
– a viewer with no advice shown under the image
– a full-screen viewer, where the brightness and contrast sliders are hidden and the camera stream is shown on the entire screen

AlternativeCamera VersionMN VersionCompatible FirmwareDownload Link
No advicePALMN14.0.6DOWNLOAD

Note: In the fullscreen version, the sliders can still be used, as they are shown after touching the screen once.

Installation Guide

Note: This guide applies only to first and second generation Media Nav units (MN1 & MN2), firmware versions 4.0.6, 6.0.4 or 7.0.5.

– a tablet, laptop or desktop equipped with an USB port
– USB flash drive, FAT32 formatted, max. 32 GB capacity

Step 1. Download the camera patch from the link in the tables above, according to the camera specifications and firmware version.

Step 2. Extract the ZIP archive and put the file upgrade.lgu in the root of the flash drive – the file should be the first to be seen upon accessing the flash drive.

Step 3. Turn on the Media Nav and insert the flash drive in the USB port.

Step 4. Press Upgrade on the update notice. If no notice appears, go to Settings > System > System version and press Upgrade once the notice is shown.

Step 5. The Media Nav will reboot and the camera patch will be installed. After the install is complete, the unit will reboot once again and go to the main interface. At this point, the camera stream should be shown correctly, if the patch matches the installed camera’s specifications.

Patches developed by djeman from MsieurLOLO forums.