Can you please paste your output from running below?
$ gcab -x
4e3f12fc1901c05790ab17ff2223a79631477aa87979498874c4c262cfafc144-WD19FirmwareUpdateLinux_01.00.21.cab
$ jcat-tool verify ./firmware.jcat --public-keys /etc/pki/fwupd
package.bin:
FAILED sha1: verifying data is not supported
FAILED sha256: verifying data is not supported
PASSED pkcs7: O=Linux Vendor Firmware Project,CN=LVFS CA
PASSED gpg: 3FC6B804410ED0840D8F2F9748A6D80E4538BAC2
FAILED: Validation failed
ec.bin:
FAILED sha1: verifying data is not supported
FAILED sha256: verifying data is not supported
PASSED pkcs7: O=Linux Vendor Firmware Project,CN=LVFS CA
PASSED gpg: 3FC6B804410ED0840D8F2F9748A6D80E4538BAC2
FAILED: Validation failed
vmm5331.bin:
FAILED sha1: verifying data is not supported
FAILED sha256: verifying data is not supported
PASSED pkcs7: O=Linux Vendor Firmware Project,CN=LVFS CA
PASSED gpg: 3FC6B804410ED0840D8F2F9748A6D80E4538BAC2
FAILED: Validation failed
rts5413.bin:
FAILED sha1: verifying data is not supported
FAILED sha256: verifying data is not supported
PASSED pkcs7: O=Linux Vendor Firmware Project,CN=LVFS CA
PASSED gpg: 3FC6B804410ED0840D8F2F9748A6D80E4538BAC2
FAILED: Validation failed
rts5487.bin:
FAILED sha1: verifying data is not supported
FAILED sha256: verifying data is not supported
PASSED pkcs7: O=Linux Vendor Firmware Project,CN=LVFS CA
PASSED gpg: 3FC6B804410ED0840D8F2F9748A6D80E4538BAC2
FAILED: Validation failed
titanridge.bin:
FAILED sha1: verifying data is not supported
FAILED sha256: verifying data is not supported
PASSED pkcs7: O=Linux Vendor Firmware Project,CN=LVFS CA
PASSED gpg: 3FC6B804410ED0840D8F2F9748A6D80E4538BAC2
FAILED: Validation failed
package.metainfo.xml:
FAILED sha1: verifying data is not supported
FAILED sha256: verifying data is not supported
PASSED pkcs7: O=Linux Vendor Firmware Project,CN=LVFS CA
PASSED gpg: 3FC6B804410ED0840D8F2F9748A6D80E4538BAC2
FAILED: Validation failed
ec.metainfo.xml:
FAILED sha1: verifying data is not supported
FAILED sha256: verifying data is not supported
PASSED pkcs7: O=Linux Vendor Firmware Project,CN=LVFS CA
PASSED gpg: 3FC6B804410ED0840D8F2F9748A6D80E4538BAC2
FAILED: Validation failed
vmm5331.metainfo.xml:
FAILED sha1: verifying data is not supported
FAILED sha256: verifying data is not supported
PASSED pkcs7: O=Linux Vendor Firmware Project,CN=LVFS CA
PASSED gpg: 3FC6B804410ED0840D8F2F9748A6D80E4538BAC2
FAILED: Validation failed
rts5413.metainfo.xml:
FAILED sha1: verifying data is not supported
FAILED sha256: verifying data is not supported
PASSED pkcs7: O=Linux Vendor Firmware Project,CN=LVFS CA
PASSED gpg: 3FC6B804410ED0840D8F2F9748A6D80E4538BAC2
FAILED: Validation failed
rts5487.metainfo.xml:
FAILED sha1: verifying data is not supported
FAILED sha256: verifying data is not supported
PASSED pkcs7: O=Linux Vendor Firmware Project,CN=LVFS CA
PASSED gpg: 3FC6B804410ED0840D8F2F9748A6D80E4538BAC2
FAILED: Validation failed
titanridge.metainfo.xml:
FAILED sha1: verifying data is not supported
FAILED sha256: verifying data is not supported
PASSED pkcs7: O=Linux Vendor Firmware Project,CN=LVFS CA
PASSED gpg: 3FC6B804410ED0840D8F2F9748A6D80E4538BAC2
FAILED: Validation failed
Validation failed
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https://bugs.launchpad.net/bugs/1961864
Title:
fwupd daemon failed verifying firmware signature
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