Sophos UTM Smart Installer (aka SUSI) with third party ISOs

I'm pretty sure it's not an official way and it's not supported at all but to do what you want but just change your desired ISO image name to any supported ISO filename . It works.

(I mean, you want to burn ubuntu.iso with SUSI, just rename the iso to something like "ssi-9.358-3.1.iso" (take a look here for more names https://www.sophos.com/es-es/support/utm-downloads.aspx) Your ubuntu ISO will appear in SuSI like an ASG image, and you are ready to go.

BR

I'm pretty sure it's not an official way and it's not supported at all but to do what you want but just change your desired ISO image name to any supported ISO filename . It works.

(I mean, you want to burn ubuntu.iso with SUSI, just rename the iso to something like "ssi-9.358-3.1.iso" (take a look here for more names https://www.sophos.com/es-es/support/utm-downloads.aspx) Your ubuntu ISO will appear in SuSI like an ASG image, and you are ready to go.

BR