If the status is not verified, the causes usually trace back to:
Sample command-line flow (example using OpenSSL, adjust for actual keys and formats): rr52c03a firmware verified
sha256sum firmware.bin > firmware.sha256
openssl dgst -sha256 -sign private_key.pem -out firmware.sig firmware.sha256
# Combine firmware.bin + header including firmware.sig per device spec
Date: April 21, 2026
Subject: Cryptographic verification and functional validation of firmware version RR52C03a
Status: VERIFIED / AUTHENTIC If the status is not verified, the causes