F9211a00017v001 Updated -

The prior firmware version contained a timing side-channel vulnerability in the secure bootloader’s ECDSA verification. v001 introduces constant-time comparison functions. Impact: Prevents offline key extraction via fault injection.

Reboot the device and re-run GET_VER. You should see: FW: f9211a00017v001_UPD or a similar revised tag. f9211a00017v001 updated

cp /etc/f9211a.cfg /etc/f9211a.cfg.bak
cp new_f9211a_updated.cfg /etc/f9211a.cfg
systemctl restart f9211a-service

According to official release notes (sourced from industrial OEM bulletins Q1 2026), applying the f9211a00017v001 updated firmware delivers the following quantifiable changes: The prior firmware version contained a timing side-channel