The procedure to to update / upgrade Cyberoam firmware is shown as follows
Login to your cyberoam with admin rights
on a deshboard you will find linke to download the available updates ,
click and download the updated new version file and store it to anywhere in your pc.
go to system
browse the latest version upgrade file downloaded in your pc.
and press update & boot
this will take some time ……
then after few while click on dashboard
select system -> maintenance -> firmware -> and click on manage of the new version showing on the left. this will ask for reboot.
this will take some time
close your browser
start the browser and login to cyberoam and check you are updated with new cyberoam firmware from your dashboard