WWAN INTEL XMM7560LTE does not works

[Fabrice Boyrie]

I have a DragonFly HP G4 laptop with this modem and I am unable to use the 4G modem.
In the log I see
kernel: iosm 0000:57:00.0: PORT open refused, phase A-CD_READY
kernel: iosm 0000:57:00.0: ch[6]: confused phase 3

May be linked to
https://bugzilla.kernel.org/show_bug.cgi?id=217200

Moreover I can not find the unlock script for this modem even if it exists
https://gitlab.freedesktop.org/mobile-broadband/ModemManager/-/blob/2734ac25191264e6d786af8a9577fb51519cb846/data/dispatcher-fcc-unlock/8086

(But even if I put it myself, the unlock script is never run, because no devices are created)

Could you help me ?

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: modemmanager 1.23.4-0ubuntu2
ProcVersionSignature: Ubuntu 6.8.0-31.31-generic 6.8.1
Uname: Linux 6.8.0-31-generic x86_64
ApportVersion: 2.28.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: unknown
Date: Mon May 27 15:50:37 2024
InstallationDate: Installed on 2024-05-24 (3 days ago)
InstallationMedia: Kubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240425.1)
SourcePackage: modemmanager
UpgradeStatus: No upgrade log present (probably fresh install)
modified.conffile..etc.dbus-1.system.d.org.freedesktop.ModemManager1.conf: [deleted]