Comment 19 for bug 1960457

i have test this iso (15/4/2022)
https://cdimage.ubuntu.com/ubuntu-mate/daily-live/current/jammy-desktop-amd64.iso
boot with grub entry:
menuentry "Ubuntu OEM install 1 sata azerty(for manufacturers)" {
insmod loopback
 insmod iso9660
set isofile="/iso/jammy-desktop-amd64.iso"
 loopback loop $isofile
set root=(loop)
gfxpayload=keep
linux (loop)/casper/vmlinuz auto=true priority=critical boot=casper iso-scan/filename=$isofile keyboard-configuration/layoutcode=be console-setup/layoutcode=be only-ubiquity automatic-ubiquity oem-config/enable=true --
initrd (loop)/casper/initrd
}

But getting this error:
/scripts/casper-premount/20iso_scan: line 29 : find_path not found
could not find the ISO : /iso/jammy-desktop-amd64.iso

Is the kernel parameter : iso-scan/filename=
still valid?