New preseed on Ubuntu 20.04

[fred]

Hello,
New Ubuntu, news problems!

They change the network install.
As new thread/doc said:
Netbooting the live server installer

And my new entry UEFI in menu.ipxe is:

Code:

:ubuntu2004
kernel iso/ubuntu/vmlinuz
initrd iso/ubuntu/initrd
imgargs vmlinuz initrd=initrd boot=casper ip=dhcp url=http://${66}/iso/ubuntu/focal-live-server-amd64.iso debian-installer/language=fr console-setup/layoutcode?=fr autoinstall ds=nocloud-net;s=http://${66}/iso/ubuntu/autoinstall/config.yml
boot

But autoinstall change too...
Automated Server Installs for 20.04

As I write in menu entry:

Code:

imgargs vmlinuz initrd=initrd boot=casper ip=dhcp url=http://${66}/iso/ubuntu/focal-live-server-amd64.iso debian-installer/language=fr console-setup/layoutcode?=fr autoinstall ds=nocloud-net;s=http://${66}/iso/ubuntu/autoinstall/config.yml

But not working, the installer boot to wizard.

Any ideas?
Thanks