# Example for an embedded Linux device dd if=/dev/mtdblock3 bs=1M count=16 | sha256sum # Compare against known-good value
Add your OEM’s security RSS feed to your monitoring system. Critical vulnerabilities are sometimes found months after a firmware release. B622-335 Firmware
: Use a pin to hold the Reset button for 10 seconds, then try the online update again. # Example for an embedded Linux device dd