If you are within your update period I think you might be able to first download Google Chrome or FireFox Aurora for the lowest version of Android to a Windows PC, then enable USB debugging on your Maxi SYS and attach  your Maxi Sys to your windows  PC via a USB cable, and copy and paste the downloaded file from your PC to the download folder of your MaxiSys . Safely eject the MaxiSys from your Windows PC and or exit USB Debugging/ unmount USB from Maxi Sys. Go to download folder and find and open the installer of the Browser. Good Luck.