App updates and threat database updates do different jobs. Updating the Android app brings interface and feature improvements. Updating the threat database gives the scanner the latest available detection rules.
Update the app
- From Google Play, open the Trojan Scanner listing and tap Update when offered for your device.
- If you installed from the official Gridinsoft website, use its official download and let Android confirm the update. Keep the existing app installed when applying a compatible update to preserve local settings and history.
Avoid APK mirrors and do not uninstall merely to update: uninstalling or clearing app storage can erase local data. Availability is shown by your installation source.
Update the threat database for free
- On the home screen, review the status beside Threat database.
- If Check updates is shown, tap it to check for newer definitions.
- Use Update when a newer database is offered, or Download when the database is missing. Wait for the download to complete.
- Check the displayed database date, then run a new scan to apply its rules.
Update controls depend on the current state and may be hidden after a recent check. The information icon opens database details; it does not start a download. The initial required database downloads automatically when none is present. That first download does not enable ongoing Pro automatic updates. The saved download-network preference still matters.
Use automatic database updates with Pro
Open Settings → Trojan Scanner Pro → Automatic database updates. Choose Wi-Fi only or Any network; the latter may use mobile data. Automatic updates are off until selected.
Enabling automatic updates also enables checks after a database update. You can turn that rescan option off independently. Android may delay background checks to save battery, so this is regular background maintenance rather than an exact-time guarantee.
See automatic updates and scheduled scans. Manual updating remains available in Free.
What an update changes
Run a new scan to evaluate apps and supported files with the updated database. Previously saved reports remain records of their original scan; they are not rewritten after an update.
If a download fails, the previous valid database is retained. Check your connection and network preference, then retry. An unavailable cloud check is separate from the local database and does not automatically turn a local result into a threat.
Control app-update reminders
Open Settings → Notifications → Notify about new versions. This preference controls reminders inside the app, not silent app installation. Turning reminders off does not prevent manual updates through Google Play or the official website.