A software update is a new version of your device’s system or an app. Updates often fix security holes that criminals could use, fix bugs, and sometimes add features. Turning on automatic updates is one of the easiest ways to stay safe.
What’s inside an update
- Security fixes (patches): close weaknesses that have been discovered. Some are already being used by attackers (a “zero-day”).
- Bug fixes: crashes, battery drain or glitches.
- New features: sometimes big, sometimes small.
When updates stop
Every device eventually reaches end of support, when the maker stops sending security fixes. It still turns on, but new holes stay open. For example, Microsoft ended regular support for Windows 10 in October 2025. Phones and tablets also have support periods that vary by maker and model.
Is it safe to update?
Real updates come through your device’s Settings or the official app store. Problems are uncommon, and a recent backup covers you if one happens. Fake “update now” pop-ups on websites and emails are a common scam trick.
What it means for you
Say yes to updates, ideally automatically and overnight. If a device can’t update anymore, avoid using it for banking, shopping or email.
Quick tips
- Turn on automatic updates for your phone, computer and apps.
- Restart your devices now and then; some updates finish on restart.
- Update routers, smart gadgets and printers too, usually through their app.
- Never install an “update” from a pop-up, email or text link.
- Follow our step-by-step update guide.
Test yourself: play Safe or Risky?, a quick free game.
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📖 Words to know
Software update Patch Zero-day Operating system (OS) Firmware