Okay. To move around the filesystem you can use a GUI file manager like Nautilus. There's ubuntu info on using the file manager here:
Alternatively, one can use the terminal with a few commands doing the following:
Open a terminal which can be found by clicking on an icon or item representing the terminal somewhere in the GUI menu.
Type in the relevant command (given below), and press enter after each command to execute it.
To check on the mediatek firmware, one can do the following in the terminal:
The cd command will change the directory the user is in (on the terminal) to the directory of interest. Run:
This takes you to the firmware directory where the firmware of interest is installed.
To list the files in the firmware directory the user has just arrived in, run:
From the list of files and directories that appears on screen, check to see if there is a directory (folder) named "mediatek". If there is such a directory, in order to change to that directory, run:
Now the user is in the mediatek directory, from where a listing of files can be seen with the following command:
If there are about 30 files there, and about 5 directories, then the firmware is installed.
If there is no mediatek directory, or a mediatek directory with few or no files in it, you need to install the mediatek firmware. That's all there is to it