LVFS is serving an update for the T490s model. It fails to install consistently.
How does the X390 think it needs the update?

Edit: Looks like the chip in the X390 is the same as the T490s as they share earlier updates. Not sure why it’s failing to update though..

$ sudo fwupdmgr hwids
 Computer Information
 BiosVendor: LENOVO
 BiosVersion: N2JET73W (1.51 )
 BiosMajorRelease: 01
 BiosMinorRelease: 33
 Manufacturer: LENOVO
 Family: ThinkPad X390
 ProductName: 20Q0CTO1WW
 ProductSku: LENOVO_MT_20Q0_BU_Think_FM_ThinkPad X390
 EnclosureKind: a
 BaseboardManufacturer: LENOVO
 BaseboardProduct: 20Q0CTO1WW

$ 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

List of firmwares: https://cdn.fwupd.org/downloads/firmware.xml.gz
Not exactly sure how this is matched to hwid or devices…

https://github.com/fwupd/fwupd/issues/1715