Firmware on IS5100

I need to update IS5100 switch, but can not find firmware for it. I undrrstand, that it is EOL/EOS. I need this switch to post hostname(system name) to dhcp server in dhcp request.​

Please check the current version of Fabric-IT(Switch OS )

MIS5100 switch FW is together with OS .

The latest version is 1.1.2700