It is important to update your computer constantly, because every update has more security than the last. Every day, hackers find new ways to break security features and the updates are made every time a flaw is discovered. If you updated your computer yesterday, it would be far more secure than if you hadn't updated for a year.
Definitely use automatic updates and for safety, update your computer weekly.
Aside form security concerns, downloaded updates can patch other software functions to repair programming glitches or install new minor functions to existing programs.
If the question refers to purchasing a new computer, benefits are in speed and memory, to enable the user to run larger more elaborate programs (gaming, music, video, etc.). New programs are designed to make the most of newer (more awesome) computers, and may not be supported by older operating systems running on slower machines.
so your computer will be protected
Update Status Summary, Update Detailed Status, Update Tabular Status, Computer Status Summary, Computer Detailed Status, Computer Tabular Status, and Synchronization Results
You have to update via iTunes on computer
yes
There is no way to update your iPod from your iPod. You have to do it on iTunes on your computer.
To update an iPhone using iTunes on a computer, first connect your iPhone to the computer using a USB cable. Open iTunes (or Finder on macOS Catalina and later) and select your device when it appears. Click on "Summary" and then choose "Check for Update." If an update is available, click "Download and Update" to begin the process, and follow any on-screen instructions to complete the update.
To get a driver update for your computer you go to the bottom of your computer screen and click on PC Issues. There will be a list of updates you need to do and all you have to do is click and wait.
Plug it into your computer, open iTunes, click update on the main screen.
To do a Windows update on your computer you can go to the Windows icon on your computer screen. Click on it and go to the Updates section. Click on Updates and follow the instructions.
You need to connect your touch to the computer, then open iTunes then select update. This will update your device.
When is it important to get an update for an application or an operating system?
The only way to perform the system update if to go from computer to computer installing each update on the computers one by one. Once though the update is started it can be left to update without any further operation.