Unable to install Q2'19 Intel Platform Update (Hot Fix Release) on Lenovo X390

Ubuntu Software shows that the Q2'19 Intel Platform Update (Hot Fix Release) is available for install on the machine.
The fwupdgr shows the same:

$ fwupdmgr get-updates
UEFI Device Firmware has firmware updates:
GUID: aeac19da-0c78-4b86-a718-1a043947d83b
ID: com.lenovo.ThinkPadN2JRM.firmware
Update Version: 192.47.1524
Update Name: ThinkPad T490s Corporate ME Update
Update Summary: Lenovo ThinkPad T490s Corporate ME Firmware
Update Remote ID: lvfs
Update Checksum: SHA1(afa2196c27376214d475213bfec45570aa260ab3)
Update Location: https://fwupd.org/downloads/b2c442db905872d9d4725a038b29450edaea8361-Lenovo-ThinkPad-T490s-CorporateMEFirmware-12.0.47.1524.cab
Update Description: • 0 Q2'19 Intel Platform Update (Hot Fix Release)

                         Version 12.0.47.1524 (LVFS: 192.47.1524)

                         Problem Fixes
                          • Intel CSME PSIRT-TA-201905-011 Q2 2019 IPU:
                          • Mitigated the following security vulnerabilities under issues:

                         Security issues fixed:
                          • CVE-2019-0086
                          • CVE-2019-0090
                          • CVE-2019-0092
                          • CVE-2019-0093
                          • CVE-2019-0094
                          • CVE-2019-0096
                          • CVE-2019-0097
                          • CVE-2019-0098
                          • CVE-2019-0153
                          • CVE-2019-0170
No upgrades for UEFI Device Firmware, current is 0.1.15: 0.1.15=same, 0.1.12=older
No upgrades for 20Q0CTO1WW System Firmware, current is 0.1.51: 0.1.51=same

Installing the update appears to stage it correctly, and when rebooting the device the update is found on the Lenovo screen.
It reboots as expected, and comes to a screen saying to press a key to continue.
The machine boots as expected, but the update is not installed, and is being presented again.