Can't create VM following HA KVM(virt-manager) instructions

I got Ubuntu server 24.04 on a Dell i7-4790 cpu @ 3.60Ghz with 24G with 24GiB of RAM where i run some VMs for testing OS like Debian12, other ubuntu releases etc. For virtualization I use QEMU / KVM which I manage via Virtual Machine Manager with no issues.

Now I want to create a HA VM, and for that i was following the instalation info which gives me, in the end, a Shell promt and never install HA (like there’s no bootloader(?)) - this is what i got:

UEFI interactive Shell v2.2
EDK II
UEFI v2.70 (ubuntu distribution of EDK II, 0x00010000)
Mapping table
BLK1: Alias(s):
PciRoot (0x0) /Pci (0x1) /Ata (0x0)
BLK0: Alias(s):
PciRoot (0x0) /Pci (0x1) /Ata (0x0)
Press ESC in 1 seconds to skip startup.nsh or any other key to continue.
Shell>

NOTE: the only “big” difference between my configuration compared with the instrucions is that the firmware: it’s OVMF_CODE_4M.fd instead of OVMF_CODE.fd

If I play around with other settings in configuration, like using Generic Linux 2022 instead of the suggested Generic Default for the OS

I got to the same dead end.
Even forcing to enable boot menu and change the order so the SATA CDROM pointing to haos_ova-15.1.qcow2 goes first - i got the same result.

So summing it all up - what am I missing!?

Thanks for your time and support.

I just ended with the same problem…
Now it’s really late for the answer, but maybe helpful for another one.

This happens when you miss to decompress the downloaded file.
In this case use unxz for the image.