Firmware update
The IOTA Settings > Firmware & License page provides information about the currently-installed license and firmware, and the ability to update them.
License
The license concerns the ability of the device to install firmware updates. Maintenance End Date displays the expiration date of the license. A device with an expired license can be used indefinitely with the currently-installed firmware version.
Firmware
The Firmware section displays the currently-installed firmware version and the Release Notes (changelog), and provides the ability to update the firmware.