Below downloads for the yelloGUI as well as updates for yellobrik firmwares can be found. 

Please check your firmware version with our minimum requirements table below before updating or installing yelloGUI on your system.

yellobrik / minimum Firmware:

CDH 1811 / 545CDH 1813 / 558CHD 1802 / 544
CHD 1812 / 544CQS 1441 / initial
(yelloGUI 2.11.0+)
PDM 1284 / 628
(yelloGUI 1.3.0+)
PVD 1800 / initial
(yelloGUI 2.5.0+)
PMV 1841 / initial
(yelloGUI 2.3.0+)
PDM 1383 / 628
(yelloGUI 2.0.0+)
OTX 1712 / initialORX 1702 / initial 

The yelloGUI software application is a free download which provides extended and enhanced access to internal yellobrik settings and controls, many of which are not accessible from the provided local controls and switches.

Not all yellobriks are currently compatible with yelloGUI. Please check the list below for the model numbers supported and also the required firmware revision. Free firmware updates can be downloaded from the yellobrik firmware update page.



  • Windows 7
  • Windows 8
  • Windows 10


  • 10.9 Mavericks
  • 10.10 Yosemite

System Requirement:


  • CPU: Core-2 CPU 1.6GHz or better
  • RAM: 2 GB
  • HDD: 1 GB
  • Graphics: 1024x768


  • CPU: Quad Core CPU 2.5GHz or better
  • RAM: 4 GB
  • HDD: 1 GB
  • Graphics: 1920x1080

yelloGUI Downloads

6 KB

117 MB

80 MB

Offline Database

557 MB

557 MB


LYNX provides free firmware upgrades to all our yellobrik customers. These upgrades can be for adding new features or correcting bugs, please refer to the release notes for details. If you use the yelloGUI for your yellobrik, please register for a direct connection to our update server. You will then automically be informed by the yelloGUI when a new release of the firmware is available for download. Click here to download the yelloGUI and check whether your yellobrik is compatible with the yelloGUI.

If not, please download the firmware installation instructions (pdf) as a guide.

Please use the yelloGUI Software (see below) for upgrading the following modules:

  • P MV 1841
  • P VD 1800

Hint: If you are using Windows 8 / 10, please use the yelloGUI Software 2.3.0 or above to upgrade your yellobrik module to the latest version. An upgrade button / hint will appear in the yelloGUI for the connected module, if a newer version is available in the LYNX Database.

    PEC 1864 Upgrade Procedure and Files

    1. Download the latest Update File below (lxz-file)
    2. Open the P EC 1864 WebGUI System Page and click on "Select Update File"
    3. Upload the downloaded lxz-file and start the update procedure

    Latest Version

    Release Notes v1867 [Changes compared to v1061]

    • solved an issue where valid logos could not be uploaded in some cases

    Download P EC 1864 Version 1867

    Older Versions:

    Release Notes v1061 [Changes compared to v1055]

    • solved an issue where stream stopped after changing the filename prefix value
    • solved an issue where Service IDs below 123 could not be entered

    Download P EC 1864 Version 1061


    Release Notes v1055 [Changes compared to v1053]

    •  added device settings export / import
    •  added Streaming on / off button in WebGUI
    •  added download Service Info function
    •  smaller improvements

    Download P EC 1864 Version 1055


    Release Notes v1053 [Changes compared to v1050]

    •  added support for HDMI standards 720p 23/24/25/29
    •  solved an issue where WebGUI could freeze after staying open for longer time
    •  solved an issue where SanDisk USB flash sticks were not mounted properly
    •  streaming will not be interrupted any longer when logo insertion is switched on / off
    •  several smaller improvements

    Download P EC 1864 Version 1053


    Release Notes v1050 [Changes compared to v1049]

    • Limited recording duration for mp4/mov to 4h to avoid defective files

    Download P EC 1864 Version 1050


    Initial Public Release

    Download P EC 1864 Version 1049

    CDH 1811

    415 KB

    2 KB

    CDH 1813

    531 KB

    746 B