You need to download the latest detection modules update or product version to troubleshoot a problem with ESET Mobile Security for Android
Do I need to update manually?
ESET Mobile Security will update automatically at least once a day as long as your Android device has an active internet connection. Performing a manual update is only necessary if an error is causing ESET Mobile Security not to receive automatic updates, or if you want to check for updates that have been made available since the last time your device received an automatic update. Although it is possible to change the update interval in ESET Mobile Security, it is not recommended, as regular detection modules updates are an integral part of keeping your device safe.