Use a tool like XperiFirm to ensure you have a clean, decrypted copy of the firmware.
If SHA1 is used and your system disables it (e.g., OpenSSL 3.0+ with -provider-path restrictions), verification will fail.
CMS Verification failure: 140272938131264:error:2E06D06E:CMS routines:CMS_verify:signature failure:... Use a tool like XperiFirm to ensure you
(Note: Unlocking the bootloader will wipe your data and may degrade certain DRM-dependent camera/display features). Check the Active Partition Slot
The error message suggests a two-step process: (Note: Unlocking the bootloader will wipe your data
An IoT device signs its firmware with a CMS signature and sends it to an update server. The server logs: "Error didn't get signature OK reply, got reply fail – Failed to verify CMS" .
Added the root CA to the server’s trust store. Also corrected the extraction logic to use X509Store with chain building. Added the root CA to the server’s trust store
: This is the most common cause. For example, if you have a Japanese carrier model (like NTT Docomo or SoftBank) and you are trying to flash a "Global" or "Unbranded" firmware, the bootloader will reject the signature. Carrier-locked bootloaders typically only accept firmware signed specifically for that carrier's variant. Incorrect Model Firmware
To avoid this error in production systems:
This breakdown reveals three distinct stages of failure: