Boot issues with Razberry 7 PRO

I’m running HassOS 9.0 on RPI 4 CM with USB boot. I have installed on it a Razberry board and everything was working fine.
I just upgraded from Razberry 2 to Razberry 7 Pro but since then I am having issues on boot. HassOS will print “Interrupt” messages infinitely on screen and never boots. Not sure what this is supposed to mean and if it is related tot eh Razberry chip or some other co-incidence.