If you want to update your Ubuntu software to the newest version, open the Terminal (ctl+alt+T) and follow the steps.
1. Type this code to update to the newest package.
2. If done, type this code to download and install the package
sudo apt-get update
2. If done, type this code to download and install the package
sudo apt-get install gedit
3. Step 2 is taking more time because step 2 is download and install all program in your PC to the newest version. Be Patient!
4. If the operation is done, enjoy it :)
4. If the operation is done, enjoy it :)