Upgrading the MWR-KIT firmware
Access the MWR-KIT web GUI.
From the main menu on the left side of the MWR-KIT page, select the Settings icon.
In the Settings page, click the Update button.
In the Upload firmware dialog box, click on Open. Then select the MWR-KIT firmware file.
After the MWR-KIT firmware file is selected, click the Upload button.