Here is the testing from the PPA.  I installed fwupd-tests and then ran below.

$ fwupdmgr --version 
compile   com.hughsie.libxmlb           0.3.17
compile   com.hughsie.libjcat           0.2.0
compile   org.freedesktop.fwupd         1.9.16
runtime   org.freedesktop.fwupd-efi     1.4
compile   org.freedesktop.gusb          0.4.8
runtime   com.hughsie.libjcat           0.2.0
runtime   org.freedesktop.gusb          0.4.8
runtime   org.freedesktop.fwupd         1.9.16

$ sudo fwupdtool enable-test-devices 
Loading…                 [************************************** ]
Successfully enabled test devices
$ sudo systemctl restart fwupd

$ fwupdmgr get-updates 
Firmware metadata has not been updated for 30 days and may not be up to date.
Update now? (Requires internet connection) [y|N]: y
Updating lvfs
Downloading…             [************************************** ]
Successfully downloaded new metadata: 3 local devices supported
Devices with no available firmware updates: 
 • WD PC SN740 SDDPNQD-256G
Devices with the latest available firmware version:
 • Fingerprint Sensor
 • System Firmware
Framework Laptop 13 (AMD Ryzen 7040Series)
│
└─Integrated Webcam™:
  │   Device ID:          08d460be0f1f9f128413f816022a6439e0078018
  │   Summary:            Fake webcam
  │   Current version:    1.2.2
  │   Minimum Version:    1.2.0
  │   Bootloader Version: 0.1.2
  │   Vendor:             ACME Corp. (USB:0x046D)
  │   GUID:               b585990a-003e-5270-89d5-3705a17f9a43
  │   Device Flags:       • Updatable
  │                       • System requires external power source
  │                       • Supported on remote server
  │                       • Cryptographic hash verification is available
  │                       • Unsigned Payload
  │   Device Requests:    • Message
  │ 
  └─FakeDevice Device Update:
        New version:      1.2.4
        Remote ID:        lvfs
        Release ID:       81488
        Summary:          Firmware for the ACME Corp Integrated Webcam
        License:          GPL-2.0+
        Size:             10 bytes
        Created:          2024-01-21
        Urgency:          Medium
        Tested by Google:
          Tested:         2024-03-09
          Distribution:   chromeos 124
          Old version:    1.2.2
          Version[fwupd]: 1.9.13
        Source:           https://github.com/fwupd/fwupd/tree/main/data/installed-tests
        Vendor:           LVFS
        Release Flags:    • Trusted metadata
                          • Is upgrade
        Description:      
        Fixes another bug with the flux capacitor to prevent time going backwards.
        Checksum:         a92d4f433e925ea8e4a10d25dfa58e64ba1e68d07ee963605a2ccbaa2e3185aa


$ fwupdmgr update
Devices with no available firmware updates: 
 • WD PC SN740 SDDPNQD-256G
Devices with the latest available firmware version:
 • Fingerprint Sensor
╔══════════════════════════════════════════════════════════════════════════════╗
║ Upgrade Integrated Webcam™ from 1.2.2 to 1.2.4?                              ║
╠══════════════════════════════════════════════════════════════════════════════╣
║ Fixes another bug with the flux capacitor to prevent time going backwards.   ║
║                                                                              ║
║ Integrated Webcam™ and all connected devices may not be usable while         ║
║ updating.                                                                    ║
╚══════════════════════════════════════════════════════════════════════════════╝
Perform operation? [Y|n]: y
Waiting…                 [***************************************]
Successfully installed firmware
 • System Firmware

$ fwupdmgr reinstall 
0.	Cancel
1.	23ec719b6aabc2d2dac5176c232f0da7a21881b0 (Fingerprint Sensor)
2.	08d460be0f1f9f128413f816022a6439e0078018 (Integrated Webcam™)
3.	1e4fa9cea0b89e613370cf9657ffa0b6d3f37fec (System Firmware)
Choose device [0-3]: 1
╔══════════════════════════════════════════════════════════════════════════════╗
║ Reinstall Fingerprint Sensor to 01000334?                                    ║
╠══════════════════════════════════════════════════════════════════════════════╣
║ Fix physical MITM vulnerability that was found from blackwinghq - a touch    ║
║ of pwn part 1.                                                               ║
║                                                                              ║
║ Fingerprint Sensor and all connected devices may not be usable while         ║
║ updating.                                                                    ║
╚══════════════════════════════════════════════════════════════════════════════╝
Perform operation? [Y|n]: y
Waiting…                 [***************************************] Less than one minute remaining…
Successfully installed firmware
Successfully uploaded 1 report