Can you upgrade an old Quattro with a new processor board?

Following up on the question of running lithium batteries on an old Quattro, circa 2011, 19 series processor. I think the current processor can only be upgraded to a fairly old firmware, certainly not 4xx and hence wondering if changing out the processor board was a feasible approach. Maybe not compatible? Nothing found on the Victron website but then I wouldn’t expect them to flag this as it cuts down on new sales. Anybody done this or have a view?

No you can’t.

OK thanks, that rules that one out!