Emagic Unitor-8 MKII Firmware

Hello folks,

i am desperatively looking in the web for the firmware image v2.0.4 for my Emagic Unitor-8 MKII and cannot find anything.
One of my two interfaces bit the dust and my replacement interface is not recognized as Unitor-8, but as vendor specific item.
When checking the firmware revision i see the version is somewhat before V2.0.4 like the second.
The problem is: now cascading does not really work like it did before, as same firmware revision is recommended.

Does anybody here in this forum has it by any chance ?