When you click on Motor-Heavy Duty, if you are receiving the following error:

 

To fix the problem, you will need to download Firefox browser by following:

1) Click here  or here  or "Firefox APK download" to download

 

2) find a download link for Firefox APK, you can select Brower or ES downloader to download. the following instruction is based on ES downloader.

3) Open file to install Fixfox on the tablet

4) Once sucessfully installed, go back to Motor FleetCross, you will be able to see Firefox brower.