Victron Multiplus 5000 small processor 1959xxx

I have a Victron Multiplus 5000 small processor 1959xxx.

It was serviced and after the service I had to load firmware with assistants again.

The FlFlash went well except that now there are no Virtual switch or assistants available, the message is that newer firmware is required and the firmware I loaded was the new 1959209. Previously most of my assistant were available and if I try to connect to old firmware upload, I get the dreaded 404 error on the web page loader.

Is there some way I can possibly get Firmware for pre 2019 assistant and ess to download.

Very desperate at this point since ut worked flawlessly before