Knox E-FOTA gives you access to a list of official firmware released via the general Samsung FOTA service within the last 12 months.*
Firmware-over-the-air (FOTA) is a service that allows IT admins to efficiently and securely push firmware updates to a fleet of enterprise mobile devices. When pushing a firmware update, Samsung generates a delta file or a change file for updating a firmware to a new version. This will then be released via the general Samsung FOTA server, which is then delivered to enterprise devices over-the-air.
NOTE — Firmware files are available from the Knox E-FOTA server for an average of 12 months.
In some cases, especially when a major Android OS version is different from the current firmware version and target firmware version, you may be required to download several delta files to reach the target firmware version. This will result in requiring devices to reboot multiple times.